For it is not you who will be speaking, but the Spirit of your Father, who will speak in you. (Mt 10:20)
οὐ γὰρ ὑμεῖς ἐστε οἱ λαλοῦντες ἀλλὰ τὸ πνεῦμα τοῦ πατρὸς ὑμῶν τὸ λαλοῦν ἐν ὑμῖν.
non enim vos estis qui loquimini, sed Spiritus Patris vestri, qui loquitur in vobis.