Don't underestimate the Lord
There is a thread that runs through most Bible stories. Someone is always underestimating God. The prophetess Deborah tells the Israelites that God has their back. They should fight against the Canaanite king and his general Sisera, who are keeping the nation hostage. People underestimate Deborah and Jael, because they are women. In doing so they underestimate God. God gives to Deborah the wisdom to lead the battle. God gives to Jael the strength to drive a tent peg through the sleeping head of General Sisera — you try lifting a sledge and using blunt stick to pierce a watermelon (Judges 4:21).