Peter erred in life and in doctrine. Paul might have dismissed Peter's error as a matter of no consequence. But Paul saw that Peter's error would lead to the damage of the whole Church unless it were corrected. Therefore he withstood Peter to his face. The Church, Peter, the apostles, angels from heaven, are not to be heard unless they teach the genuine Word of God.
Martin LutherBe thou comforted, little dog, Thou too in Resurrection shall have a little golden tail.
Martin LutherWealth is the smallest thing on earth, the least gift that God has bestowed on mankind.
Martin Luther