Why aren't more people Christians? Why are there so many empty pews here today? How can we get more people as members, involved in our church? These are all really questions about "evangelism". But the answers vary throughout Christendom. Some place the burden on the shoulders of those who should be seeking for Jesus. Others answer that it's a burden on the ones who are already church members. But in today's Gospel, the answers to evangelism center on the gospel-giver–Christ Jesus!
People aren't church-going Christians because they don't know Jesus. Oh, they probably know the basics about Him. But they don't know Him, just like John the Baptized didn't know Him at first. They don't understand Who Jesus is for them. They don't comprehend just what Jesus does for them, Even you would remain ignorant of the saving knowledge of the Christ if God didn't do something to help.
So God sends proclaimers like John to testify about Jesus and Who He is. He sends preachers like John to witness to the things Christ accomplishes. Once John comprehended just Who Jesus was, he told people! Every week God gathers you all here to here this testimony about Jesus, your Messiah, anointed to be your Savior. You hear the witness, week in and week out, of Jesus the Christ and all that He does to save you by giving His life as forfeit on the cross, so that by His death you now have life!
People aren't yet church-going believers because, they are looking for love in all the wrong places. They are searching, but not finding. Some look to be comforted in human relationships, others by a bottle, and still others search for answers within themselves, but never find them. They need help! Without God's direction, even U2 would be saying, "We still haven't found what we are looking for." .
But God has helped you! He has given you that gospel invitation, "Come and see!" God used someone to bring you to Jesus for the first time. For most of you, He was revealed to you as the Christ, showing Himself as your anointed Savior when you were baptized. Just like John baptized in water to reveal Jesus to people, so too have you been baptized so Jesus could reveal His saving love to you. You are baptized into Jesus' death and resurrection, by His Holy Spirit to make you His Own!
People aren't yet church-attending Christians because, quite frankly, they haven't really looked at Jesus as they should. Oh, perhaps they have considered Him once or twice, but they really haven't looked *to* Him for what He truly is for them. Maybe they prefer to look to themselves, or trust in the temporary things of this world, rather than looking to Jesus. But nothing else is as reliable as He is.
This is why John says, not once, but twice here, "Look, the Lamb of God!" Jesus is that Lamb of God Who was sacrificed for all people. Like the Lamb butchered on the day of Atonement in the Old Testament whose shed blood freed the people from their sins each year, Jesus has taken away the sins of the world! His body given to death on the cross and His blood shed for you at Calvary forgive you your sins, replacing them with His Own righteousness. You eat this body and drink His blood today in His Supper!
Hymns from LSB:
734 I Trust Oh Lord your Holy Name (Listen through the prelude. The hymn with stanzas will follow)
402 The Only Son of Heaven (same again)
404 Jesus, Once with Sinners Numbered
534 Lord Enthroned in Heavenly Splendor stanzas music