Praise and Worship · 1966They'll Know We Are ChristiansSongwriter Peter ScholtesLyrics ↗ Sheet music ↗ YouTube ↗DetailsCopyright © 1966 F.E.L. Publications. Assigned 1991 Lorenz Publishing Company (Admin. by Lorenz Corporation).Scripture connectionsExpositoryThis passage is the main idea of the songJohn 13:35