7 On hearing this, David sent Joab out with the entire army of fighting men. 8 The Ammonites came out and drew up in battle formation at the entrance of their city gate, while the Arameans of Zobah and Rehob and the men of Tob and Maakah were by themselves in the open country.
9 Joab saw that there were battle lines in front of him and behind him; so he selected some of the best troops in Israel and deployed them against the Arameans. 10 He put the rest of the men under the command of Abishai his brother and deployed them against the Ammonites. 11 Joab said, “If the Arameans are too strong for me, then you are to come to my rescue; but if the Ammonites are too strong for you, then I will come to rescue you. 12 Be strong, and let us fight bravely for our people and the cities of our God. The Lord will do what is good in his sight.”
There is a balance between your actions and your faith in God. David’s army would use their minds to figure out the best way to use their resources to fight. They knew the outcome was in God’s hands. What do you do in your life? Use your mind and resources in your life decisions. As you use your mind and resources, trust God for the outcome. Also, as you are going through a situation, keep open communication with God. This helps you use your mind and resources to remain within God’s will.