2 Bible Verses about Covenant Obligations

"Again you have heard that it was said to the men of old, "You must not forswear yourselves, but must perform your vows to the Lord. "But I say to you, swear not at all; neither by the sky, 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.read more.
"Nor must you swear by your head, since you cannot make one hair white or black. "But let your word be simply 'Yes' or 'No'; anything beyond this comes from the Evil One.

Let me illustrate, brothers, from every-day life. When once a human testament is made, and formally ratified, no one sets it aside or adds to it.