Galatians 3:26

For you are all sons of God through faith in Christ Jesus.

Romans 8:14-17

For all who are being led by the Spirit of God, these are sons of God. 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! The Spirit Himself bears witness with our spirit that we are children of God, and if children, heirs also, heirs of God and fellow heirs with Christ, if indeed we suffer with Him in order that we may also be glorified with Him.

John 1:12-13

But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name. Who were born not of blood, nor of the will of the flesh, nor of the will of man, but of God.