During his homily at Casa Santa Marta, the pope explained that a true Christian accepts Jesus' path of salvation.
POPE FRANCIS
If we do not accept the path of Jesus, the humiliation He has chosen for redemption, not only are we not Christians. We deserve what Jesus said to Peter: “Get behind me, Satan!”
Pope Francis also said that when the Church fails to follow Christ's path, it makes errors and becomes worldly.
SUMMARY OF POPE'S HOMILY
Confessing Jesus is confessing his death, His resurrection. It is not confessing, “You are God” and stopping there. No.“You came for us and you died for me. You are resurrected. You give us life, You promised us the Holy Spirit to guide us.” Confessing Jesus means accepting the path that the Father has chosen for Him: humiliation. Paul, writing to the Philippians, says that God sent his Son, who “emptied himself, taking the form of a slave. He humbled himself, even unto death, death on a cross.” If we do not accept the path of Jesus, the path of humiliation that He has chosen for redemption, not only are we not Christians, we deserve what Jesus said to Peter: “Get behind me, Satan!”