If anyone thinks himself to be a prophet or spiritual, let him acknowledge that the things which I write to you are the commandments of the Lord. (1 Corinthians 14:37, NKJV)
Jesus sent His apostles into all the world to preach His gospel to everyone (Mk. 16:15; Matt. 28:19). Before His death, Jesus told His apostles, “Most assuredly, I say to you, he who receives whomever I send receives Me; and he who receives Me receives Him who sent Me” (Jno. 13:20). Later, Jesus appeared to Paul (Saul of Tarsus), appointed him to be an apostle, and sent him to preach the gospel, too (Acts 26:16-20). We rightly conclude that there is absolutely no way one can receive Jesus, yet reject His apostles. Truly, the first Christians were commended precisely because “they continued steadfastly in the apostles’ doctrine” (Acts 2:42). Instead of unsuccessfully trying to separate the teachings of Paul, Peter, John and the other apostles from Christ, cherish and hold fast all they spoke and wrote. By doing so, you are cherishing the Son and the Father (who sent Jesus to the world). To do less is not only a rejection of the apostles, but also of the Father and the Son. The spiritual acknowledge this. Indeed, one is not “spiritual” when he refuses to receive the apostles’ teachings as “the commandments of the Lord.” We need all of the New Testament. All of it is from God (2 Tim. 3:16-17).