“But I say unto you, Swear not at all; neither by heaven; for it is God's throne:”
King James Version (KJV)
Mt 5:34,35 Swear not at all. Christ does not forbid judicial oaths. Note, (1) God sometimes swears by himself (Ge 22:16,17); (2) Jesus made oath before the Sanhedrin (Mt 26:63); (3) Paul made oath to the Corinthians (2Co 1:23). He does forbid all profanity and idle oaths, such as were common among the Jews, and still so defile the mouths of men. Neither by heaven. The Jews held that it was impious to swear by the name of God, but that one could swear "by heaven", "by the earth", "by Jerusalem". One was God's throne, the second his footstool, Jerusalem the city of the Messiah King, all too holy for profanation.