Albert Barnes 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)

And in that day - .

Call upon his name - Margin, ‘Proclaim.’ It denotes to call upon him in the way of celebrating his praise. The whole hymn is one of praise, and not of prayer.

Declare among the people - Among all people, that they may be brought to see his glory, and join in the celebration of his praise.

His doings - Particularly in regard to the great events which are the subject of the previous predictions - his interposition in saving people by the Messiah from eternal death.

Make mention - Hebrew, ‘Cause it to be remembered’ (see the note at Isaiah 62:6).

That his name is exalted - That it is worthy of adoration and praise. It is worthy to be exalted, or lifted up in view of the nations of the earth (2 Samuel 22:47; Psalms 21:13; Psalms 46:10).