Then Saul dressed David in his own tunic. He put a coat of armor on him and a bronze helmet on his head. David fastened on his sword over the tunic and tried walking around, because he was not used to them. “I cannot go in these,” he said to Saul, “because I am not used to them.” So he took them off.
(1 Samuel 17:38-39 NIV)
After agreeing to let David fight Goliath the Philistine, King Saul dressed the young shepherd in his own clothes, perhaps to make David look more presentable to the giant enemy. David, who wasn’t used to this kind of clothing, said to the king, “I cannot go in these…because I am not used to them.” So he took them off and instead took things that he was used to–his staff, five smooth stones and a sling (1 Samuel 17:39-40). These tools proved to be more effective in the battle. Similarly, the world tries to mold Christians into its image by luring them into things that they aren’t used to so that they look more acceptable. Like David, we can decide not to wear the world’s attire and instead, put on the full armor of God to fight the Enemy.
To fight successfully, dress appropriately.