Ephesians 6:13: “Therefore put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground, and after you have done everything, to stand.”
Evil days come from time to time. What does that mean? It means that everyone has bad days when he/she is sort of under attack by temptations, is tested by adverse circumstances or simply everything slips out of hand. How should you behave when such days come? You should use all the armors that the Lord has given you. Take them out and fight the good fight. You shall win!