“But this is the promise that I will make to Israel after those days,” declares the Lord: “I will put my teachings inside them, and I will write those teachings on their hearts. I will be their God, and they will be my people.
This is true because he already knew his people and had already appointed them to have the same form as the image of his Son. Therefore, his Son is the firstborn among many children.
It’s clear that you are Christ’s letter, written as a result of our ministry. You are a letter written not with ink but with the Spirit of the living God, a letter written not on tablets of stone but on tablets of human hearts.