He that cometh from heaven, (for it appeareth by the latter part of the verse, that is the sense of from above), as Christ did, not only in respect of his Divine nature, but being (as to his whole person) clothed with majesty and authority from above, infinitely excelleth any one who is a mere creature: he that is of an earthly original, speaketh of the earth. Such as is a man's original, such is his nature, such is his discourse. Though I be sent of God, as 1 Thessalonians 16:27, and my baptism be from heaven, (so our Saviour himself testifieth, Matthew 21:25), yet my original is of the earth, and my relations and expressions are suitable to a mere man: but he that is from heaven excels all, as in the dignity of his person, so in the sublimity of his knowledge.
Related Commentaries of John 3:31
John 3:31
31 He that cometh from above is above all: he that is of the earth is earthly, and speaketh of the earth: he that cometh from heaven is above all.