King James Version (KJV)
The LORD hath sworn, and will not repent, Thou art a priest for ever after the order of Melchizedek.
Modern English
The LORD has sworn and will not change his mind: You are a priest forever after the order of Melchizedek.
Hebrew
נִ֤שְׁבַּ֨ע יְהוָ֘ה ׀ וְלֹ֥א יִנָּחֵ֗ם אַ֫תָּ֥ה כֹהֵ֥ן לְעוֹלָ֗ם עַל דִּבְרָ֗תִי מַ֫לְכִּי זֶֽדֶק׃
nishbaʿ yhvah ׀ vloʾ yinaḥem ʾatah kohen lʿvolam ʿal dibratiy malkiy zedeq