But I say unto you, Swear not at all; neither by heaven; for it is God's throne:
All Commentaries on Matthew 5:34 Go To Matthew 5
John Chrysostom
AD 407
Next, to lead them farther away from swearing by God, He says, Neither by Heaven, for it is God's throne, nor by the earth, for it is the footstool of His feet; nor by Jerusalem, for it is the city of the great King: still speaking out of the prophetical writings, and signifying Himself not to be opposed to the ancients. This was because they had a custom of swearing by these objects, and he intimates this custom near the end of his Gospel.