You aren't helping your case. Your question is this:See post 36, as for circumcision I agree with Paul that circumcision is not required for Gentiles because it was the physical sign of God's covenant with Abraham and his descendants, not a universal command for all nations. Even in the Old Testament, God showed that what truly mattered was not the flesh but the heart.
And Jehovah thy God will circumcise thy heart, and the heart of thy seed, to love Jehovah thy God with all thy heart, and with all thy soul, that thou mayest live. (Deuteronomy 30:6 ASV)
Jesus never commanded Gentiles to be circumcised. Instead, He told His disciples to teach all nations to obey everything He had commanded (Matthew 28:19-20). When the question arose in the early church, the apostles, guided by the Holy Spirit, decided not to require circumcision for Gentile believers (Acts 15:28-29).
Circumcision was a covenant sign for Abraham's descendants, while the New Covenant emphasizes a transformed heart that loves and obeys God. The outward sign is no longer required, but the inward reality it pointed to remains essential.
"Can the Holy Spirit lead someone to teach against what God previously commanded?"
You state here that the Holy Spirit did in fact teach (guide) against what God previously commanded. Unless you forgot, Abraham was a gentile.
The answer to your question is therefore Yes.