Isaiah 37:5 Midrash

וַיָּבֹ֗אוּ עַבְדֵ֛י הַמֶּ֥לֶךְ חִזְקִיָּ֖הוּ אֶל־יְשַׁעְיָֽהוּ׃

So the servants of king Hezekiah came to Isaiah.

Read midrashic interpretation of Isaiah 37:5: and classical rabbinic exegesis.