1. Those who rebel against God will also rebel against one another. 2 Samuel 3:6-11
It is possible that taking Saul’s concubine was a first step for Abner to take Saul’s throne.
For Abner to be rebuked by this weakling whom he had come to despise was more than the proud man could bear. Proverbs 24:29; Proverbs 20:22
Sin does backfire.
7Do not be deceived: God is not mocked, for whatever one sows, that will he also reap. Galatians 6:7 (ESV)
37Whoever loves father or mother more than me is not worthy of me, and whoever loves son or daughter more than me is not worthy of me. Matthew 10:37 (ESV)
2. Conduct affairs with the appropriate party because God loves order and peace. 2 Samuel 3:12-19
The return of Michal would represent an acknowledgment on the part of the house of Saul to David’s rights.
David reveals savvy in accepting Abner’s proposal, but making him a middle man between he an Ishbosheth, so as not to grant too much ground to this opportunist.
The ready response of Israel, and particularly all of Benjamin, to Abner’s word suggests that the only reason they had not turned to David earlier was Abner.
33For God is not a God of confusion but of peace. As in all the churches of the saints. 1 Corinthians 14:33 (ESV)
3. A leader must be a peacemaker; therefore, he must be able to overlook personal wrongs for the benefit of all God’s people. 2 Samuel 3:20-21
18If possible, so far as it depends on you, live peaceably with all. Romans 12:18 (ESV);
David was not loyal to the one who would progress his own agenda (opposite of Abner), he was loyal to God.
14Wait for the LORD; be strong, and let your heart take courage; wait for the LORD! Psalm 27:14 (ESV)