John Gill Commentary Psalms 92:4

"For thou, Jehovah, hast made me glad through thy work: I will triumph in the works of thy hands." — Psalms 92:4 (ASV)

For you, Lord, have made me glad through your work
Either of creation, which work is mentioned in the precept of the sabbath, as an argument for it; and therefore a very proper work to be remembered and observed on that day; or of providence, which in general extends to all men, but especially to them that believe; or of the work of redemption wrought out by Christ, which is cause of great joy and gladness; or of the work of grace upon the soul, which when a man is satisfied of, gives him infinite pleasure, as knowing it will be performed until the day of Christ; and when a man is in such a joyful frame of spirit, he is in a very suitable one to sing the praises of God, (James 5:13).

I will triumph in the works of your hands ;
those before mentioned; or shout aloud for joy, on account of them; and also triumph over all enemies, as being out of the reach of them, so as to be hurt and ruined by them.