Charles H. Spurgeon on Psalms 103:2

Benefits. The word rendered "benefits" —lwmg gemul, means properly an act, work, doing, whether good or evil, Ps 137:8; and then, desert, or what a man deserves for his act; recompense. It is rendered deserving in Jud 9:16; benefit, as here, in 2Ch 32:25; desert, Ps 28:4; reward, Ps 94:2 Isa 3:11 Ob 1:15; recompense, Pr 12:14 Isa 35:4 59:18 66:6 Jer 51:6 La 3:64 Joe 3:4,7. The proper reference here is to the Divine dealings, to what God had done, as a reason for blessing his name. His dealings with the Psalmist had been such as to call for praise and gratitude. What those dealings particularly were he specifies in the following verses. Albert Barnes.