The Roman Catholic Church has infallibly defined the interpretation of Matthew 16.
Christ continues with the conferral of the “keys” which appears to be a clear statement of a position of leadership authority.
Mt 16:19-20
I will give you (singular) the keys to the kingdom of heaven. Whatever you bind on earth shall be bound in heaven; and whatever you loose on earth shall be loosed in heaven.
“The Roman Catholic Church has infallibly defined the interpretation of Matthew 16.”
And where exactly is infallibility of Biblical interpretation predicated of the Roman Catholic Church?