'Adoption' in the Bible

For you have not received a spirit of slavery leading to fear again, but you have received a spirit of adoption as sons by which we cry out, “Abba! Father!”

And not only this, but also we ourselves, having the first fruits of the Spirit, even we ourselves groan within ourselves, waiting eagerly for our adoption as sons, the redemption of our body.

who are Israelites, to whom belongs the adoption as sons, and the glory and the covenants and the giving of the Law and the temple service and the promises,

so that He might redeem those who were under the Law, that we might receive the adoption as sons.

He predestined us to adoption as sons through Jesus Christ to Himself, according to the kind intention of His will,