Matthew 19:28 "And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel."
Peter and the 11 are going to be judging the twelve tribes of Israel, not gentiles. Paul was a chosen vessel to bear Christ's name among the gentiles. His was a commission to the Church the Body of Christ, not the Kingdom that Christ will establish when He returns.
My idea is about to crash and burn! Thank You smvoice. BTW I am not resisting the Holy Spirit in this assessment. Being teachable is an important attribute of child like faith.