No Turning Back - Galatians, Part 8

Discipleship is a core aspect of discipleship. A common danger in that journey is that believers start turning back to the earthly principles. How does the fact that God knows them save them from that danger?

Galatians 4:8-9
Formerly, when you did not know God, you were enslaved to those that by nature are not gods. But now that you have come to know God, or rather to be known by God, how can you turn back again to the weak and worthless elementary principles of the world, whose slaves you want to be once more?