For all the promises of God are “Yes” in Christ. And so through Him, our “Amen” is spoken to the glory of God.
Ὅσαι γὰρ ἐπαγγελίαι Θεοῦ, ἐν αὐτῷ τὸ Ναί, καὶ ἐν αὐτῷ τὸ Ἀμήν, τῷ Θεῷ πρὸς δόξαν δι᾿ ἡμῶν.