Charles Ellicott Commentary Isaiah 12:4

"And in that day shall ye say, Give thanks unto Jehovah, call upon his name, declare his doings among the peoples, make mention that his name is exalted." — Isaiah 12:4 (ASV)

Declare his doings among the people. —Literally, among the peoples. The prophet quotes from the hymn which had been sung when the Ark was placed in Zion (1 Chronicles 16:8), and in part from Psalms 105:1.