And it shall be that whoever will not hear My words, which He speaks in My name, I will require it of him.
Deuteronomy 18:19
Surrounding context
18:18 I will raise up for them a Prophet like you from among their brethren, and will put My words in His mouth, and He shall speak to them all that I command Him.
18:19 And it shall be that whoever will not hear My words, which He speaks in My name, I will require it of him.
18:20 But the prophet who presumes to speak a word in My name, which I have not commanded him to speak, or who speaks in the name of other gods, that prophet shall die.'