Verse 1 – Ish-Bosheth had no courage of his own-rather it was Abner who had the courage. When Abner died, Ish-Bosheth was left with nothing except fear. Fear can paralyze us, but faith and trust in Jesus Christ can overcome fear (2 Timothy 1:6-8; Hebrews 13:6). If God is on your side, whom can you fear?
Verse 4 – The rest of Mephibosheth’s story is told in chapter 9; 16:1-4 and 19:24-30.
Verse 11 – David called Ish-Bosheth an “innocent man.” Being Saul’s son, Ish-Bosheth knew he should be king but his only downfall was weakness. David knew God had promised the kingdom to him and he knew that God would fulfill His promise. When David learned of the murder of Ish-Bosheth, he was angry. He wanted to unite all of Israel not drive a wedge between the supporters of those who favored Ish-Bosheth. In order to show this, he had the murders executed and gave Ish-Bosheth a proper burial.