A num'rous host redeemed by blood!
They hymned their King in strains divine;
I heard the song and strove to join.
The poet who penned those words, about the year 1800, was a man named John Kent. With those words he wrote the the essential biography of every boy and girl, every man and woman who ever placed their trust in the Lord Jesus Christ; every person who ever committed himself to obeying the Son of God in all things.
It's clear that John Kent had been reading the Book of Revelation. In that book a much earlier John, the author of Revelation, caught a glimpse of heaven. There, he saw what he tells us was "a great multitude which no man could number."
There have been a few preachers in my past who sometimes made me think that about 83 people were going to make it to heaven. The Bible says that the real number is untold millions. I like the Bible version better, don't you? It makes me think that I might be there too someday. It helps me understand what Jesus meant when he told his disciples that "God sent his Son into the world not to condemn the world; but so that the world through him might be saved." The gospel is good news for sinners!
This is what the Lord's Supper is all about. Jesus left it for us as a reminder. What this reminder says is that, in spite of your sins, if you want to be a part of the family of God; if you want to live for the Lord and make him proud to own you; if you want to be finally saved and live in the presence of God forever, you can.
Having heard the song they're singing in heaven, you can strive to join those blessed people, and make it; all because of what Jesus did when he went to the cross and died for us; when he have gave his body and his blood for you and me.