לֹא־שָׁלַ֥חְתִּי אֶת־הַנְּבִאִ֖ים וְהֵ֣ם רָ֑צוּ לֹא־דִבַּ֥רְתִּי אֲלֵיהֶ֖ם וְהֵ֥ם נִבָּֽאוּ׃
I have not sent these prophets, yet they ran; I have not spoken to them, yet they prophesied.
Read midrashic interpretation of Jeremiah 23:21: and classical rabbinic exegesis.