In Jer. 31:31-34, it is written,
31 “Behold, the days are coming,” said Yahveh, “that I shall cut a new covenant with the house of Israel and the house of Judah, 32 not like the covenant that I cut with their fathers in the day that I took their hand to bring them out of the land of Egypt, which covenant they broke, although I was a husband to them,” said Yahveh. 33 “But this shall be the covenant that I shall cut with the house of Israel. After those days,” said Yahveh, “I shall put My Law within them, and I shall write it upon their hearts, and I shall be their god, and they shall be My people. 34 And a man shall no longer teach his neighbor, and a man his brother, saying, “Know Yahveh!” for they all shall know Me, from the least of them even unto the greatest of them, for I shall forgive their iniquity, and I will no longer remember their sin.”
In the New Covenant, the prophet Jeremiah states that Yahveh shall put His Law within the Israelites and write it upon their hearts.
According to Catholics, what is this Law that Yahveh puts within the Israelites?