Charles Ellicott Commentary Acts 2:28

"Thou madest known unto me the ways of life; Thou shalt make me full of gladness with thy countenance." — Acts 2:28 (ASV)

You have made known to me the ways of life.—The Apostle does not interpret these words, but we can hardly err in thinking that he would have looked on them also as fulfilled in Christ’s humanity; To Him also the ways of life had been made known, and so even in Hades He was filled with joy (better, perhaps, gladness, as in Acts 14:17), as being in the Paradise of God (Luke 23:43).