For thou, Lord, hast made me glad - Thou hast made me happy; thou hast given me such a state of feeling as finds an appropriate expression in “praise.”
Through thy work - Either the work of creation, the finishing of which the Sabbath was designed particularly to commemorate; or the works of God in general - the universe; or the general dealings of his providence; or some particular interpositions of Providence in his behalf that called for special praise. All these are appropriately combined in the celebrations - the praises - of the Sabbath; to these should be added, as among the most marvelous of his works, and that which furnishes special occasion for praise on the Christian Sabbath, the wonderful work of redemption - that which of all the “works” of God makes a heart rightly affected most “glad.”
I will triumph - I will exult or rejoice.
In the works of thy hands - In all thy works; in all that thou hast done.