This week’s question was in relation to Matthew 16.19 and how it should be taught:
δώσω σοι τὰς κλεῖδας τῆς βασιλείας τῶν οὐρανῶν, καὶ ὃ ἐὰν δήσῃς ἐπὶ τῆς γῆς ἔσται δεδεμένον ἐν τοῖς οὐρανοῖς, καὶ ὃ ἐὰν λύσῃς ἐπὶ τῆς γῆς ἔσται λελυμένον ἐν τοῖς οὐρανοῖς.
I believe that the passage refers to the rabbinical idea of ratifying the decrees of Heaven. In other words, the Rabbi’s saw it as a judicial measure when they were interpreting Scripture, much in the way pastors do so now with Scripture. Scripture was from God, but to ratify it was to interpret it according to the situation at hand. How to apply the Levitical law or the like. in other words, I believe that this passage refers to Scripture as our bedrock but the Church as the magisterium of those words. By keys, I think that Christ is referring to the Apostles as the gate keepers, as the preachers and ministers to God’s household. To sum, this passage is not so much about binding or loosening anything, but about the Church’s authority to preach Scripture.
It may have been Christ’s way of initiating a new Jewish sect, with His Apostles as the Sanhedrin, giving them the authority to interpret Scripture in light of Christ. We know that ‘Matthew’ had to craft a lot of the Jewish Scriptures to fit the life of Christ and this gave him the authority to do so.