Sonship

Galatians 4:1–7 ESV

I mean that the heir, as long as he is a child, is no different from a slave, though he is the owner of everything, but he is under guardians and managers until the date set by his father. In the same way we also, when we were children, were enslaved to the elementary principles of the world. But when the fullness of time had come, God sent forth his Son, born of woman, born under the law, to redeem those who were under the law, so that we might receive adoption as sons. And because you are sons, God has sent the Spirit of his Son into our hearts, crying, “Abba! Father!” So you are no longer a slave, but a son, and if a son, then an heir through God.

Heirs that are children are no different than a slave even though they own everything. An heirs time is coming. It's waiting for them.

God sent His Son, born of a woman, born under the law to redeem those under the law.

John 1:12 ESV

But to all who did receive him, who believed in his name, he gave the right to become children of God,

Romans 8:14 ESV

For all who are led by the Spirit of God are sons of God.

Because you are sons, God sent His spirit. No longer a slave but a son and heir.