Deuteronomy 18:18-20

Amplified Bible

¹⁸ I will raise up a prophet from among their countrymen like you, and I will put My words in his mouth, and he shall speak to them all that I command him. ¹⁹ It shall come about that whoever will not listen to My words which he shall speak in My name, I Myself will require it of him [and there will be consequences]. ²⁰ But the prophet who presumes to speak a word in My name which I have not commanded him to speak, or which he speaks in the name of other gods—that prophet shall die.’