Exodus 34:26-28 New Revised Standard Version Catholic Edition (NRSVCE)
26 The best of the first fruits of your ground you shall bring to the house of the Lord your God.
You shall not boil a kid in its mother’s milk.
27 The Lord said to Moses: Write these words; in accordance with these words I have made a covenant with you and with Israel. 28 He was there with the Lord forty days and forty nights; he neither ate bread nor drank water. And he wrote on the tablets the words of the covenant, the ten commandments.[a]