Jeremiah 31:31-34

"...I will put My law within them and on their heart I will write it; and I will be their God, and they shall be My people." (Jeremiah 31:33 NASB)

“The days are coming,” declares the Lord,
    “when I will make a new covenant
with the people of Israel
    and with the people of Judah.
It will not be like the covenant
    I made with their ancestors
when I took them by the hand
    to lead them out of Egypt,
because they broke my covenant,
    though I was a husband to them”
declares the Lord.
“This is the covenant I will make with the people of Israel
    after that time,” declares the Lord.
“I will put my law in their minds
    and write it on their hearts.
I will be their God,
    and they will be my people.
No longer will they teach their neighbor,
    or say to one another, ‘Know the Lord,’
because they will all know me,
    from the least of them to the greatest,”
declares the Lord.
“For I will forgive their wickedness
    and will remember their sins no more.”