Numbers 15:38-39

“Speak to the Israelites and tell them this: ‘Tie several pieces of thread together and attach them to the corners of your clothes. Put a blue thread in each one of these tassels. Wear them from now on. You will have these tassels to look at to remind you of all the LORD’s commands. Then you will obey them and not be disloyal by following what your bodies and eyes want.