The Call Never Changes: A sermon on Isaiah 6 and Luke 5

The Call Never Changes
Isaiah 6 & Luke 5

I.H.S.

May the grace of God our Father and the Lord Jesus Christ sustain you, as you are formed for the works God has planned for you in the future, as you walk with Him through this life!

  • Called to Train

Andrew Murray, a 19th Century Missionary from the Netherlands to South Africa, wrote,

“Let the Church awake to her calling to train the feeblest of her members to know that Christ counts upon every redeemed one to live wholly for His work. This alone is true Christianity, is full salvation.”*

While we need to carefully unpack that statement, it is quite true. Every person part of this community, young or old, is called to live for Christ.

Each of you is called to do God’s work, no matter what else you do, no matter where you do it.

The challenge is not to think that serving God is what saves you. Instead, salvation looks like these men’s lives: a relationship like Isaiah and Peter enter into with God. An intimate relationship resulting in a joy found in walking with Jesus throughout life.

And as you are called to walk in this journey, you are following in Isaiah and Peter’s footsteps, for the call never changes…

  • Called into God’s Presence

The first part of the call is finding ourselves in the presence of God. For Isaiah, that was the incredible vision of heaven, seeing God in all His glory. It must have been overwhelming, to say the least, to see the angels ministering to God, praising God, seeing how God’s glory envelopes the entire world.

Peter and Andrew’s call was somewhat different. Their call happened at the end of a long night of fishing- long because all their hard work resulted in nothing but sore bodies and frustrated attitudes. As Jesus taught, and then the miracle – catching fish when and where you aren’t supposed to catch fish, led Peter to the same conclusion as Isaiah. “I have been called into the presence of God….”

  • Called into God’s grace

Once called into God’s presence, both Isaiah and Peter had the same reaction,

Then I said, “It’s all over! I am doomed, for I am a sinful man. I have filthy lips, and I live among a people with filthy lips.

When Simon Peter realized what had happened, he fell to his knees before Jesus and said, “Oh, Lord, please leave me—I’m such a sinful man.” For he was awestruck by the number of fish they had caught, as were the others with him.

To me, that they could talk while seeing God’s glory is amazing!

They were both aware of two simple facts…

The first is that God is so incredibly holy and righteous.

The second was how they described themselves.

for I am a sinful man. And I’m such a sinful man.

But that is where the second part of the call comes into play.

For these men were not sinners in the hands of an angry God, they were in the presence of a God determined to be merciful, a God who loved them, a God who had a plan for their life….

And even as they are called into God’s presence, they are called into His grace…into receiving His forgiveness and pardon. Hear that clearly….

He touched my lips with it and said, “See, this coal has touched your lips. Now your guilt is removed, and your sins are forgiven.”

Jesus replied to Simon, “Don’t be afraid!

God doesn’t call us in this life to punish us. He calls us into His presence to purify us, and so both Isaiah and Peter are calmed, and their sin dealt with…so that they can see the last part of their call into the presence of God

  • Called to Minister to Others

What happens to Isaiah and Peter next is important.

Not because it happened to them… but because the call of God never changes.

Remember Murray’s statement?

“Let the Church awake to her calling to train the feeblest of her members to know that Christ counts upon every redeemed one to live wholly for His work. This alone is true Christianity, is full salvation.”*

Peter is told he will become a fisher of men, so he will. Isaiah responds to the same call that brought him into the presence of God, saying, Here am I – send me! I often hear that like this…

Send me! Send me! Please send me!

For that is the response. One early church describes it this way,

“The Lord does not say unequivocally whom he is sending. He leaves the matter vague so that the prophet might respond to the call voluntarily. When Isaiah responds, he does not do so out of rashness or overconfidence but out of trust. For his iniquity has been removed, and he has been cleansed of his sins”[1]

And Luther adds,But to offer one’s service is to say, ‘I’ll be glad to accept if you can use me in this place.’ If he is wanted, it is a true call. So Isaiah said, ‘Here I am. Send me’ [Isa. 6:8]. He went when he heard that a preacher was needed. This ought to be done.”[2]

Sharing God’s love is always a matter of faith – of trusting that God has sent us into that place, using whatever gifts, whatever knowledge we have – no matter whether we are 9 or 90, a preschooler or a Ph.D. A fisherman, a tax collector, a student, a pastor, a financial guru, it doesn’t matter… We are called into this relationship… something so incredible, we need to bless others by bringing them into it.

Most of us will be like Peter, just fishers of men called where we live. As we live, called in the presence of God, saved by the cross of Christ, the end result is fantastic… sinners end up in heaven.

Just like we will be…. So my friends… when you are in the presence of God… hear His call… and go where He sends you…trusting in Him. For you dwell in His presence. AMEN!


* Andrew Murray, Working for God!: A Sequel to Waiting on God! (New York; Chicago; Toronto: Fleming H. Revell, 1901), 35.

[1] Wilken, Robert Louis, Angela Russell Christman, and Michael J. Hollerich, eds. 2007. Isaiah: Interpreted by Early Christian and Medieval Commentators. Translated by Robert Louis Wilken, Angela Russell Christman, and Michael J. Hollerich. The Church’s Bible. Grand Rapids, MI; Cambridge, UK: William B. Eerdmans Publishing Company.

[2] Luther, Martin. 1999. Luther’s Works, Vol. 54: Table Talk. Edited by Jaroslav Jan Pelikan, Hilton C. Oswald, and Helmut T. Lehmann. Vol. 54. Philadelphia: Fortress Press.

About justifiedandsinner

I am a pastor of a Concordia Lutheran Church in Cerritos, California, where we rejoice in God's saving us from our sin, and the unrighteousness of the world. It is all about His work, the gift of salvation given to all who trust in Jesus Christ, and what He has done that is revealed in Scripture. God deserves all the glory, honor and praise, for He has rescued and redeemed His people.

Posted on February 6, 2022, in Devotions, Sermons and tagged , , , , , , . Bookmark the permalink. Leave a comment.

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