1 Corinthians is talking about Pastors building the church. If they build a church of only milk fed Christians when they are “tried by fire” they will be “burned up” they will fall away. If they are meat filled Christians and they are “tried by fire” they will prove to be valuable and will abide the fire having been better grounded in knowledge. Read the first part of the chapter. If you truly “go by scripture” you should know that.
"According to the grace of God which is given unto me, as a wise master builder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon. For other foundation can no man lay that that is laid, which is Jesus Christ." 1 Cor. 3:10,11.
Religions who follow Peter as the rock, for the Messianic Church of Israel, are in sad shape during the dispensation of the grace of God. Paul laid this foundation for the Church the Body of Christ.
Just as the Messianic Church, the Kingdom Church, was built on the foundation of Christ as Messiah, the Church the BOdy of Christ is founded upon Christ. However, Peter did NOT lay the foundation for the Church in this present dispensation. It was laid by Paul, through direct revelations from Jesus Christ.
Peter and Paul, then, both built upon the same foundation, but whereas the millenial church will be built upon the Lord as Israel's Messiah, the church of the present dispensation of grace is built upon Him as the glorified Head of the body, rejected on earth, but exalted far above all, at God's right hand in heaven. This distinction is clearly brought out by comparing Acts 2 with 2 Tim. 2.