The Spirit itself beareth witness with our spirit, that we are the children of God:
Romans 8:17And if children, then heirs; heirs of God, and joint-heirs with Christ; if so be that we suffer with him, that we may be also glorified together.
1 Peter 2:2As newborn babes, desire the sincere milk of the word, that ye may grow thereby:
1 John 5:1Whosoever 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.