When you see the tassels, you will remember and obey all the commands of the Lord instead of following your own desires and defiling yourselves, as you are prone to do.
All Scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. God uses it to prepare and equip his people to do every good work.