1 Samuel 20:42 in the King James Version
And Jonathan said to David, Go in peace, forasmuch as we have sworn both of us in the name of the LORD, saying, The LORD be between me and thee, and between my seed and thy seed for ever. And he arose and departed: and Jonathan went into the city.
Context
41 As soon as the boy was gone, David arose out of the south, and fell on his face to the ground, and bowed himself three times. They kissed one another and wept with one another, and David wept the most.
42 Jonathan said to David, “Go in peace, because we have both sworn in the LORD’s name, saying, ‘The LORD is between me and you, and between my offspring and your offspring, forever.’” He arose and departed; and Jonathan went into the city.