Q. 47. Where is the moral law summarily comprehended?

A. The moral law is summarily comprehended in the Ten Commandments.

And he wrote on the tablets, in the same writing as before, the Ten Commandments that the Lord had spoken to you on the mountain out of the midst of the fire on the day of the assembly. And the Lord gave them to me. Deuteronomy 10:4

And he said to him, “Why do you ask me about what is good? There is only one who is good. If you would enter life, keep the commandments.” Matthew 19:17