Exodus 23:19-21 World English Bible (WEB)
19 You shall bring the first of the first fruits of your ground into the house of Yahweh your God.
“You shall not boil a young goat in its mother’s milk.
20 “Behold, I send an angel before you, to keep you by the way, and to bring you into the place which I have prepared. 21 Pay attention to him, and listen to his voice. Don’t provoke him, for he will not pardon your disobedience, for my name is in him.