John Gill Commentary John 12:49

"For I spake not from myself; but the Father that sent me, he hath given me a commandment, what I should say, and what I should speak." — John 12:49 (ASV)

For I have not spoken of myself As man, or as separate from his Father; his doctrine was not human, but divine, and therefore a rejection of it cannot escape notice at the future judgment:

but the Father which sent me, he gave me a commandment what I shouldsay, and what I should speak ; Christ, as man, had his mission, and commission, and his instructions from his Father to preach the Gospel unto men; he was anointed for it by the Holy Ghost; he was enjoined the preaching of it by his Father, and the several doctrines he published were delivered him by him; see (John 8:28) (17:8) .