NET
7 The king had mercy on Mephibosheth son of Jonathan, the son of Saul, in light of the Lord’s oath that had been taken between David and Jonathan son of Saul.
Darby
7 But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of Jehovah's oath that was between them, between David and Jonathan the son of Saul.
KJV
7 But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the LORD'S oath that [was] between them, between David and Jonathan the son of Saul.