With Saul dead, civil war breaks out. David is from the tribe of Judah, and Judah declares him king. The other tribes of Israel are loyal to one of Saul鈥檚 sons. David doesn鈥檛 recognize Ish-bosheth as king because God did not appoint him.
David was willing to fight to gain the outcome God had determined. Following God sometimes requires waiting, but sometimes requires action. Over and over we see David seeking God鈥檚 direction so he would know when it was time to act. We need to seek God today too.