As I clicked this picture the verse from Hebrews 13:1 was going through my head.
Well, the bond of unity is enhanced by sharing a t-shirt together!
Ephesians 4:1 .....walk in a manner worthy of the calling to which you have been called, 2with all humility and gentleness, with patience, bearing with one another in love, 3eager to maintain the unity of the Spirit in the bond of peace.