Isa 28:16, Eph 2:20, 1 Cor 3:10-11
When Peter confessed that You are the Christ, the Son of the living God, Jesus blessed Peter and said that He would build the church on that faith. That is, the church was built on the belief that Jesus is the Christ. (Mt 16:16-18)
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.
It is prophesied in the Old Testament that it is based on a testing stone. And it is prophesied that those who believe in this stone will not be in a hurry. This stone speaks of Christ, and this Christ is the very foundation of the church. (Isa 28:16)
Isa 28:16 Therefore thus saith the Lord God, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste.
The church is built on the foundation of the apostles and bibliographies, Christ as the cornerstone. (Eph 2:20)
Eph 2:20 And are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner stone;
The church should not be built on any foundation other than the belief that Jesus is the Christ. (1 Cor 3:10-11)
1 Cor 3:10 According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon. 11 For other foundation can no man lay than that is laid, which is Jesus Christ.