“The sin of Judah is written with a pen of iron; with a point of diamond it is engraved on the tablet of their heart, and on the horns of their altars,
For your gods have become as many as your cities, O Judah; and as many as the streets of Jerusalem are the altars you have set up to shame, altars to burn incense to Baal.
But this is the covenant which I will make with the house of Israel after those days, says the Lord: I will put my law within them, and I will write it upon their hearts; and I will be their God, and they shall be my people.
If there is iniquity in Gilead they shall surely come to naught; if in Gilgal they sacrifice bulls, their altars also shall be like stone heaps on the furrows of the field.
Then the priest shall take some of the blood of the sin offering with his finger and put it on the horns of the altar of burnt offering, and pour out the rest of its blood at the base of the altar of burnt offering.
They made their hearts like adamant lest they should hear the law and the words which the Lord of hosts had sent by his Spirit through the former prophets. Therefore great wrath came from the Lord of hosts.
and you show that you are a letter from Christ delivered by us, written not with ink but with the Spirit of the living God, not on tablets of stone but on tablets of human hearts.