1 Jn 5:1
Peter confessed that Jesus was the Christ. Then Jesus said that he would build the church on the confession that Jesus was the Christ. He said that faith in Jesus as the Christ overcomes the powers of Hades. Also, those who confess that Jesus is the Christ can preach the gospel of the kingdom to people. (Mt 16:16-19)
Mt 16:16 And Simon Peter answered and said, Thou art the Christ, the Son of the living God. 17 And Jesus answered and said unto him, Blessed art thou, Simon Barjona: for flesh and blood hath not revealed it unto thee, but my Father which is in heaven. 18 And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it. 19 And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.
Also, those who believe in Jesus as the Christ become children of God. (1 Jn 5:1)
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.