Where is the moral law summarily comprehended?

The moral law is summarily comprehended in the ten commandments, which were delivered by the voice of God upon mount Sinai, and written by him in two tables of stone;[1] and are recorded in the twentieth chapter of Exodus. The four first commandments containing our duty to God, and the other six our duty to man.[2]

1. Deut. 10:4

   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.

   Exod. 34:1-4

   The Lord said to Moses, “Cut for yourself two tablets of stone like the first, and I will write on the tablets the words that were on the first tablets, which you broke. Be ready by the morning, and come up in the morning to Mount Sinai, and present yourself there to me on the top of the mountain. No one shall come up with you, and let no one be seen throughout all the mountain. Let no flocks or herds graze opposite that mountain.” So Moses cut two tablets of stone like the first. And he rose early in the morning and went up on Mount Sinai, as the Lord had commanded him, and took in his hand two tablets of stone.

2. Matt. 22:37-40

   And he said to him, “You shall love the Lord your God with all your heart and with all your soul and with all your mind. This is the great and first commandment. And a second is like it: You shall love your neighbor as yourself. On these two commandments depend all the Law and the Prophets.”

Question 98, Westminster Larger Catechism