What were the three things mentioned in the Bible that God wrote upon?

Answer:

"Now the tablets were the work of God, and the writing was the writing of God engraved on the tablets" (Exodus 32:16).

"But this is the covenant that I will make with the house of Israel after those days, says the LORD: I will put My law in their minds, and write it on their hearts; and I will be their God, and they shall be My people" (Jeremiah 31:33).

"In the same hour the fingers of a man's hand appeared and wrote opposite the lampstand on the plaster of the wall of the king's palace; and the king saw the part of the hand that wrote. ... Then the fingers of the hand were sent from Him, and this writing was written" (Daniel 5:5,24).

"Clearly you are an epistle of Christ, ministered by us, written not with ink but by the Spirit of the living God, not on tablets of stone but on tablets of flesh, that is, of the heart" (II Corinthians 3:3).

"He who overcomes, I will make him a pillar in the temple of My God, and he shall go out no more. And I will write on him the name of My God and the name of the city of My God, the New Jerusalem, which comes down out of heaven from My God. And I will write on him My new name" (Revelation 3:12).