By His Holiness Pope Shenouda III
God's children should be strong because they were created in His image and likeness (Gn 1: 26); and God is powerful. We say about Him "Holy is the Lord God Almighty"; therefore, they should be strong like Him.
In the book of Numbers, when God ordered Moses to take a census of the people, this was restricted to young men who can go to war (Nu 1: 3). When the Song of Solomon talks about the men around King Solomon's throne, it describes them as valiant men; "They all hold swords, Being expert in war. Every man has his sword on his thigh, Because of fear in the night." (Sgs 3: 8)