1 Jn 5:1, Jn 1:12, Rom 8:15-16
Believing that Jesus is the Christ, the Holy Spirit has come into our hearts. So we call God our Father. We also receive an inheritance from God.
Gal 4:6 And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father. 7 Wherefore thou art no more a servant, but a son; and if a son, then an heir of God through Christ.
1 Jn 5:1 Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
Jn 1:12 But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:
Rom 8:15 For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father. 16 The Spirit itself beareth witness with our spirit, that we are the children of God: