Galatians 3:24-25 reads:

"Therefore the Torah was our tutor to bring us to Messiah, that we might be justified by faith. But after faith has come, we are no longer under a tutor."

When I went to school, I had assignments in reading, in writing, arithmetic, phys ed, etc.

Today, when I am no longer under a schoolmaster, I still do the things I learned in school. They are no longer commanded. I do them because they are desireable to me. I love to read, especially God's word. I write letters and reports and grocery lists. I use arithmetic to balance (sort of) my bank account, or to figure how many gallons I need to paint the house or if my daughter's formula contains enough of the vitamins she needs. I try to stay in shape by getting some exercise.

When you are no longer under a tutor you don't stop doing what you learned!