Jesus did not mean Peter was actually Satan. He recognized that at that moment Peter allowed Satan to operate through him. He was not demon possessed, but he was allowing Satanic spirits to influence him. Believers--by their own actions--can “give place” or make room for Satan to use them (Ephesians 4:27).
Hindi siya sinasaniban ng demonio, subalit pinahihintulutan niya ang espiritu ni Satanas na makaimpluwensya sa kaniya. Ang mga mananampalataya- sa pamamagitan ng kanilang mga gawa- ay maaaring magbigay ng daan kay Satanas na gamitin sila (Efeso 4:27).