KJV: Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne;
NASB: "And so, because he was a prophet and knew that GOD HAD SWORN TO HIM WITH AN OATH TO SEAT one OF HIS DESCENDANTS ON HIS THRONE,
KJV: But above all things, my brethren, swear not, neither by heaven, neither by the earth, neither by any other oath: but let your yea be yea; and your nay, nay; lest ye fall into condemnation.
NASB: But above all, my brethren, do not swear, either by heaven or by earth or with any other oath; but your yes is to be yes, and your no, no, so that you may not fall under judgment.