For prophecy came not of old by the will of man — Of any mere man whatever. But the holy men of God — Devoted to him, and set apart by him for that purpose, spake and wrote. Being moved — Literally, carried. They were purely passive therein.
Related Commentaries of 2 Peter 1:21
2 Peter 1:21
21 For the prophecy came not in old timed by the will of man: but holy men of God spake as they were moved by the Holy Ghost.