There's no such persons as perfect, we born all to be imperfect, only Jesus who is perfect even to the last breathe of his life on the cross.Everybody are sinners, even we are already belongs to any religious community sometimes we are tempted to do sins.The good thing is, if we know how to accept and to be humble before the Lord to ask forgiveness, He forgives us, coz He is a forgiving god and a compassionate God, but we must do something as well in return and that is to obey his command that we must love Him and love one another.He came into this world save us from our sins, he died for us, so that we can enter  into the father's house through Him and have eternal life!