'Adoption' in the Bible

For you didn't receive the spirit of bondage again to fear, but you received the Spirit of adoption, by whom we cry, "Abba! Father!"

Not only so, but ourselves also, who have the first fruits of the Spirit, even we ourselves groan within ourselves, waiting for adoption, the redemption of our body.

who are Israelites; whose is the adoption, the glory, the covenants, the giving of the law, the service, and the promises;

that he might redeem those who were under the law, that we might receive the adoption of children.

having predestined us for adoption as children through Jesus Christ to himself, according to the good pleasure of his desire,