“And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven.”
King James Version (KJV)
16:19 I will give thee the keys of the kingdom of heaven - Indeed not to him alone, (for they were equally given to all the apostles at the same time, #John 20:21|,22,23;) but to him were first given the keys both of doctrine and discipline. He first, after our Lord's resurrection, exercised the apostleship, #Acts 1:15|. And he first by preaching opened the kingdom of heaven, both to the Jews, #Acts 2:14 |&c., and to the Gentiles, #Acts 10:34 |&c. Under the term of binding and loosing are contained all those acts of discipline which Peter and his brethren performed as apostles: and undoubtedly what they thus performed on earth, God confirmed in heaven. #Matt 18:18|.
Mt 16:19 I will give unto thee the keys of the kingdom of the heaven. That is, of the church. The office of the keys is to open the doors, or close them. On Pentecost, Peter first opened the doors and declared the conditions of which men could have their sins forgiven, be bound or loosed, and thus enter into the church. Seven years later at Caesarea he declared the same conditions to the Gentiles. While Peter took the lead the keys were given to all the apostles, and to no other mortal. See Mt 18:18 Joh 20:19-28 All that is here said to Peter is said to all the apostles.