Mat 16:19 | PNT | STEP | 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 All that is here said to Peter is said to all the apostles.

Matthew 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.