"Have No Fear, Little Flock"

In the fourth verse of "Have No Fear, Little Flock," there's the repeated line "Thankful hearts raise to God."  A couple months ago, I discovered that this is at least related to, if not directly drawn from, part of Colossians 3:16:  "Let the word of Christ dwell in you richly, teaching and admonishing one another in all wisdom, singing psalms and hymns and spiritual songs, with thankfulness in your hearts to God."

Here's a link to my post on the hymn's Biblical sources.