6 And because you are sons, God has sent forth the Spirit of His Son into your hearts, crying out, “Abba, Father!” 7 Therefore you are no longer a slave but a son, and if a son, then an heir of God through Christ.
Philemon 15-16
15 For perhaps he departed for a while for this purpose, that you might receive him forever, 16 no longer as a slave but more than a slave—a beloved brother, especially to me but how much more to you, both in the flesh and in the Lord.