John Calvin Commentary Psalms 106:1

"Praise ye Jehovah. Oh give thanks unto Jehovah; for he is good; For his lovingkindness [endureth] forever." — Psalms 106:1 (ASV)

Praise ye Jehovah—this exhortation serves as a title; not that the psalm only contains thanksgiving and praise to God, but that the people, from the experience of past favors, may obtain the assurance of reconciliation, and thus entertain the hope that God, although currently offended, would soon be pacified towards them. In celebrating the praises of God, therefore, he orders them to call to mind things that would tend to assuage their grief due to present afflictions, and to animate their spirits, and prevent them from sinking into despair.