Jesus stated in Jn 16:13 that the Spirit of truth would “…guide us into all truth…” Matt28:19 commanded us to “…teach all nations…”
What “religion” calls the Great Commission was necessary because Scripture says in Acts 8:25-40, Philip was “lead by the Holy Spirit” to go unto Gaza, he found a eunuch reading Isaiah and asked him if he understood what he was reading. The eunuch replied, “How can I, except some man should guide me?” Rm 10:14 says, “How, then, shall they call on him in whom they have not believed? And how shall they believe in him of whom they have not heard? And how shall they hear without a preacher?” As Disciples of Christ, it is our duty to initially guide by planting seed (the Word of God) as stated in I Cor 3:6-8, which says, “I have planted, Apol’los watered, but God gave the increase.” God, whose name is Jesus, the Holy Spirit, whose name is Jesus, will give the increase! (Jn 14:26)
Remember, Disciples of Christ, are human but not in the “carnal” sense but filled with the Holy Spirit which “leads and guides us” as it did with Philip in Acts 8 above!
The Scriptures are necessary for guidance and to be read “in the Spirit” praying and believing for revelation from the Holy Spirit. II Tim 3:16 says “All scripture is given by the inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness.”
Scriptures are interpreted differently (1) Because “man” has changed portions of the Scriptures and “men” not filled with the Holy Spirit read literally and interpret not in accordance with the Holy Spirit. However, if filled with the Holy Spirit you will be “lead and guided into ALL truth!” (2) Eph4:7-29 says “But unto every one of us is given grace according to the measure of the gift of Christ.” (13) “Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fullness of Christ;” You see, we have different measures of grace however will “…come in the unity of the faith…” by the grace of God.
Remember, Peter and Paul had different measures of grace as shown in Gal 2:7-21 regarding circumcision. Verse 21 “I do not make void the grace of God; for if righteousness come by the law, then Christ is dead in vain.”
Gal 3 explains it all! When Disciples of Christ are given more grace and/or new revelation according to Scripture but not according to “tradition” - disputes occur!