The baptism of John, was it from heaven, or of men?

And they reasoned with themselves, saying, If we shall say, From heaven; he will say, Why then believed ye him not?

And great earthquakes shall be in divers places, and famines, and pestilences; and fearful sights and great signs shall there be from heaven.

Men's hearts failing them for fear, and for looking after those things which are coming on the earth: for the powers of heaven shall be shaken.

Heaven and earth shall pass away: but my words shall not pass away.

And there appeared an angel unto him from heaven, strengthening him.

And it came to pass, while he blessed them, he was parted from them, and carried up into heaven.