2 Samuel 3:18 (BSB)

Now take action, because the LORD has said to David, ‘Through My servant David I will save My people Israel from the hands of the Philistines and of all their enemies.’”

From 2 Samuel 3. Also in the ESV.

Commentary on 2 Samuel 3:18

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on 2 Samuel 3:7-21: Here, I. Abner breaks with Ish-bosheth, and deserts his interest, upon a little provocation which Ish-bosheth unadvisedly gave him. God can serve his own purposes by the sins and follies of men. 1. Ish-bosheth accused Abner of no less a crime than debauching one of his father's concubines, Sa2 3:7.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on 2 Samuel 3:18: Now then do it,.... Make him your king, and I shall no longer oppose it as I have done: for the Lord hath spoken of David; concerning his being king, and the saviour of his people Israel: saying, by the hand of my servant David I will save my people Israel out of the hand of the Philistines, and out of the hand of all...
• Adam Clarke (Methodist), Clarke's Commentary on the Bible on 2 Samuel 3:18: The Lord hath spoken of David - Where is this spoken? Such a promise is not extant. Perhaps it means no more than, "Thus, it may be presumed, God hath determined."
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on 2 Samuel 3:6-39: 2Sa 3:6-39 Decline of the House of Saul. - 2Sa 3:6-11. Abner’s quarrel with Ishbosheth. - During the war between the house of Saul and the house of David, Abner adhered firmly to the house of Saul, but he appropriated one of Saul’s concubines to himself.