'In the Name of the Lord' in the Bible

Then David said to the Philistine, “You come to me with a sword, a spear, and a javelin, but I come to you in the name of the Lord of hosts, the God of the armies of Israel, whom you have taunted.

Jonathan told David, “Go in safety, inasmuch as we have sworn to each other in the name of the Lord, saying, ‘The Lord shall be between me and you, and between my descendants and yours forever.’” Then he stood and left, while Jonathan went into the city.