The commentary on this hymn in a hymnal known as The Worshipping Church says

“One of the numerous anonymous scripture songs, this hymn began its life with the derivation of stanza one from the well-known confession of faith recorded in Philippians 2:10-11, where Paul appears to be quoting form an early Christian hymn…”

So, from the time of Paul, and before, Christians set their faith to words in song —

He is Lord, He is Lord! He is risen from the dread and He is Lord!
Every knew shall bow, and every tongue confess, that Jesus Christ is Lord!

That’s the Easter message. That’s our confession.

Prayer

I let my knee bow today before you, Lord Jesus. I thank you for dying in my place. I praise you for overcoming the tomb and death. And I worship you as my King and God. Amen.