Parallel
Revelation 2:16
Patriarchal Greek New Testament (1904) · Berean Standard Bible
μετανόησον οὖν· εἰ δὲ μή, ἔρχομαί σοι ταχὺ καὶ πολεμήσω μετ᾽ αὐτῶν ἐν τῇ ῥομφαίᾳ τοῦ στόματός μου.
Therefore repent! Otherwise I will come to you shortly and wage war against them with the sword of My mouth.