4 But when the set time had fully come, God sent his Son, born of a woman, born under the law,
5 to redeem those under the law, that we might receive adoption to sonship.
6 Because you are his sons, God sent the Spirit of his Son into our hearts, the Spirit who calls out, "Abba, Father."
7 So you are no longer a slave, but God's child; and since you are his child, God has made you also an heir.
8 Formerly, when you did not know God, you were slaves to those who by nature are not gods.
9 But now that you know God—or rather are known by God—how is it that you are turning back to those weak and miserable forces ? Do you wish to be enslaved by them all over again?
10 You are observing special days and months and seasons and years!