Exodus 23:19-21

American Standard Version

¹⁹ The first of the first-fruits of thy ground thou shalt bring into the house of Jehovah thy God. Thou shalt not boil a kid in its mother’s milk.

²⁰ Behold, I send an angel before thee, to keep thee by the way, and to bring thee into the place which I have prepared. ²¹ Take ye heed before him, and hearken unto his voice; ^[a]provoke him not; for he will not pardon your transgression: for my name is in him.