Charles H. Spurgeon on Psalms 106:1

Praise ye the Lord. Hallelujah. Praise ye Jah. This song is for the assembled people, and they are all exhorted to join in praise to Jehovah. It is not meet for a few to praise and the rest to be silent; but all should join. If David were present in churches where quartets and choirs carry on all the singing, he would turn to the congregation and say, "Praise ye the Lord." Our meditation dwells upon human sin; but on all occasions and in all occupations it is seasonable and profitable to praise the Lord. O give thanks unto the Lord; for he is good. To us needy creatures the goodness of God is the first attribute which excites praise, and that praise takes the form of gratitude. We praise the Lord truly when we give him thanks for what we have received from his goodness. Let us never be slow to return unto the Lord our praise; to thank him is the least we can do —let us not neglect it. For his mercy endureth for ever. Goodness towards sinners assumes the form of mercy, mercy should therefore be a leading note in our song. Since man ceases not to be sinful, it is a great blessing that Jehovah ceases not to be merciful. From age to age the Lord deals graciously with his church, and to every individual in it he is constant and faithful in his grace, even for evermore. In a short space we have here two arguments for praise, "for he is good: for his mercy endureth for ever, "and these two arguments are themselves praises. The very best language of adoration is that which adoringly in the plainest words sets forth the simple truth with regard to our great Lord. No rhetorical flourishes or poetical hyperboles are needed, the bare facts are sublime poetry, and the narration of them with reverence is the essence of adoration. This first verse is the text of all that which follows; we are now to see how from generation to generation the mercy of God endured to his chosen people.