Sermon for Advent 4 - Isaiah 40.1-8 - December 21, 2014
1) Who
is this man that stands on the banks of the Jordan, preaching and baptizing?
This is the question that the Jews is Jerusalem want to know. They send their interrogators
to the Jordan to decipher John’s true identity. John tells them that he is not
the Christ. “Well, who are you then? Elijah?” Again John denies. “Are you The
Prophet prophesied by Moses?” Again John denies. Exhausted and frustrated, they
beg him, “Who are you then?” John’s answer is not to point to his identity at
all. For John it matters not who he is. He, as a man, is unworthy of all
things, especially to serve his Lord by untying his Lord’s sandal strap. He is
the voice of Isaiah 40. For St. John, it matters not who he is. It matters what
He is called to do. What matters is the Office the Lord has given him to
fulfill. And that office is ‘the voice’ or ‘the preacher.’ He says, “I am ‘the voice of one crying in the
wilderness: ‘Make straight the ways of the Lord, as the prophet Isaiah said.’”
This certainly fits John’s public ministry. John preaches repentance from sins.
He preaches that sinners turn from their sinful ways, habits, ideas, and
imaginations and turn to the Lord, beseeching Him for mercy and the forgiveness
of their sins. By quoting part of Isaiah 40 John invites his hearers to go back
through that chapter and apply all of it to his preaching, since what is
important is the office of being “the voice” that is important. Isaiah proclaims,
“The voice of one crying in the wilderness: "Prepare the way of the
LORD; Make straight in the desert a highway for our God. Every valley shall be
exalted and every mountain and hill brought low; The crooked places shall be
made straight And the rough places smooth; The glory of the LORD shall be
revealed, And all flesh shall see it together; For the mouth of the LORD
has spoken.” (Isaiah 40:3-5)
2) Since the glory of the Lord is
to be revealed very shortly, sinners are to prepare a highway for the Lord’s
coming. This is not a physical highway of course. These
pictures of changing landscape are impossible to accomplish literally, for
humanity at least. Leveling mountains, filling in valleys with pea gravel, and
straightening state highways are small things compared to what the voice
actually bids us to do. These are all conditions of the heart which must be
dealt with, for it they are not dealt with, the Lord will not travel those
paths. How do we exalt every valley? By removing from our hearts the base and
low sins with which we have grown comfortable. How do we bring low every
mountain and hill? By repenting of pride, avarice, greed, and every sin of that
kind that contradicts the humility which we are to have. How do we straighten
crooked paths of the heart and mind? By stopping our mouths to the deceits we
tell others and the lies we tell ourselves. How do we make rough places smooth?
In the same way. Valleys, mountains, hills, crooked and rough paths, these need
not be labeled as specific sins that cling to us. They are any sins that we
harbor in our heart, for any sin obstructs the way of the Lord as He seeks to
come into our hearts with His Gospel. Make straight paths in the wilderness of
your heart says the voice.
3) As
if this were too abstract for us, St. John the Baptist elaborates on Isaiah’s
illustration of how we are to prepare for the Lord’s arrival. In Luke 3 someone
responds out loud to John’s preaching, “What
then shall we do?” He answers, “"He who has two tunics, let him
give to him who has none; and he who has food, let him do likewise." Then
tax collectors also came to be baptized, and said to him, "Teacher, what
shall we do?" And he said to them, "Collect no more than what is
appointed for you." Likewise the soldiers asked him, saying, "And
what shall we do?" So he said to them, "Do not intimidate anyone or
accuse falsely, and be content with your wages.” (Luke 3:11-14) His message was repent. Stop doing the sins you are
doing and walk instead in the paths of righteousness. Where previously you were
lazy, repent and be industrious. Where previously you have been unfaithful,
repent and take your duties up with vigor. Where previously you have been
lustful, repent and live chastely towards yourself and with true love toward
your neighbor. Whereas previous you have been wrathful, repent and in your
anger sin not, being patient with all men as God has been patient with you. Repent
of your sin. Turn away from your sin. When you turn away, it will follow you.
It may even chase you as you turn from it, for sin does not give up as easily
as we might like. So repent as often as is necessary. In fact, make a habit of
it and repent daily of your sins, for daily the paths of the heart become
overgrown with the weeds and bramble of sin and its warped way of seeing
yourself and the world.
4) The
voice bids us prepare the highway of our hearts in this way so that we might
receive what the Lord brings with Him at His advent. That is comfort, so much
comfort, in fact, that the prophet is commanded to preach it twice! “Comfort, yes comfort my people!” The
prophet is told to speak tenderly to Jerusalem, to her heart, and tell God’s
people that their warfare is ended. The hard service Jerusalem has endured
because of her sins is completed. Her iniquity, disgusting as it was deep, is
pardoned. They are no longer responsible for the debt of their sin, they have
been released from their guilt. The Lord says His people will receive double
for all her sins, not double punishment for their sins, but double comfort.
This is what St. John means when he writes in His Gospel, “of His fullness we have all received, and grace for grace.” (John
1:16) It is why the prophet is commanded to preach “comfort” twice. When your
Lord comes He comes to speak tenderly to sinners, forgiving their sins,
removing their guilt, and cleansing their souls. This is why we look forward to
all of Christ’s advents, it is not? We anticipate the yearly celebration and
remembrance of Christ’s nativity because in His first advent He comes in
gentleness and humility, bearing our flesh to be our savior from sin. His
comfort is that in His atoning sacrifice, God’s fierce wrath against sin and
sinners is abated, for that wrath is fully meted out on Christ so that there is
no condemnation for those who are in Christ Jesus by faith. It is comfort that
your sins have been atoned for and there is no work required of you for your
justification before God.
5) This
same comfort is delivered to you weekly as Christ advents yet again and again
in this place through His Word and Sacraments. Since Christ comes to us truly
in the preaching of the Word, the Absolution, Baptism, and the Lord’s Supper,
we must do as the voice bids us do and always be examining our hearts and so
preparing them through repentance to meet Christ in His means of grace. These
means are how He gives each of you individually the comfort of sins forgiven,
iniquity pardoned, and guilt removed. It is in these blessed means and these
means alone that the Lord advents among us to give us the blessings of His
atoning death on the cross. In the absolution is true comfort that the sins
which bother your conscience are truly forgiven and removed that they are gone.
In the Lord’s Supper Christ unites with you in His true, real body and blood to
give you forgiveness and through that forgiveness, the very life that He has
eternally. In Baptism He washes sinners once for all, bestowing upon us so many
great and precious promises that we can look to and cling to every day in spite
of what goes on in the world around us and in our own hearts. In His preaching,
Christ gives us His gospel so that we know over and again the comfort He brings
through His means of grace, so that we might always believe and not doubt His
gracious, tender comfort that He desires to give to you.
6) This
is why John baptized at the Jordan. His interrogators asked him, “Whey then do you baptize if you are not the
Christ, nor Elijah, nor the prophet?” (John 1:25) Because it is part of the
office of the ministry, it is the way God saves sinners who repent. John’s
baptism, the baptism of the apostles after the ascension, they are the same,
for both were for the remission of sins. Baptism by John was how the Lord
forgave His penitent people gathered at the Jordan. The Lord did not only want
John to preach repentance, but the Gospel as well. As St. Paul tells Bishop
Titus, “But when the kindness and the love of God our Savior
toward man appeared, not by works of righteousness which we have done, but
according to His mercy He saved us, through the washing of regeneration and
renewing of the Holy Spirit.” (Titus 3:4-5) So John bids
his penitents to be baptized and have the Lord wash away the sins they had just
beforehand confessed. In those waters, just as it is with water combined with
God’s Word today, Christ gives His comforting promises to those who sorrow over
their sins. Those words of promise spoken to you in Holy Baptism remain
forever, always present to be used by faith. For “the grass withers, the flower fades, but the word of our God stands
forever.” (Isaiah 40:8) God’s promises in Holy Baptism stand forever, He
will not cancel them or ignore them, for He cannot deny Himself and He will not
deny His Word.
7) Repentance and receiving God’s promises in confidence.
This is how valleys are raised, mountains and hills leveled, the crooked paths
of the heart straightened, and the rough places of the soul are smoothed. This
was the message of the voice in Isaiah 40. It was the message of the forerunner
to the Messiah, St. John the Baptist. It is the message of all faithful
Bishops, pastors, and deacons until the end of the age. For it matters not who
John is, or was, in his person, just as it matters not who the prophet Isaiah
was in his person or who the pastor is in his person. What matters is the
office to which they called, for that office must prepare the way of the Lord
so that when He comes weekly in His means of grace, He fights hearts prepared.
With hearts prepared for Christ’s advent in Word and Sacrament, we then look
forward to His final Advent, the day in which Christ will return to judge the
quick and dead. We look forward to that day because Jesus tells us in Luke
21:28, that when He returns “your
redemption draws near.” Even in judgment, the Lord will not forsake those
whom He has baptized and made His sons and daughters through Water and Spirit.
Rejoice, beloved of God, that God the Son becomes incarnate to earn your
salvation. Rejoice in this heavenly comfort, dear saints, that Your Lord
advents among you in His Word and Sacraments to forgive your sins and give you
the salvation earned for you. Rejoice that your Lord will come again to fulfill
all His promises made to you. Rejoice that He gives you repentance and faith,
that He raises valleys and levels mountains to come to you for you and your
salvation. Amen.