Parallel
Revelation 2:16
Nestle 1904 Greek New Testament · Berean Standard Bible
μετανόησον οὖν εἰ δὲ μή ἔρχομαί σοι ταχύ 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.