"This they said, tempting him, that they might have to accuse him. But Jesus stooped down, and with his finger wrote on the ground, as though he heard them not." (John 8:6)
During His earthly ministry Jesus never wrote a book or any other document, so far as we know, but it is recorded that He wrote with His own finger in the sand, and that what He wrote turned away those who had sought to stone a woman caught breaking one of God's Ten Commandments.
The woman was repentant, however, and Jesus forgave her, evidently indicating this by what He wrote with His finger on the ground. This He could do because He, as God, had written this very commandment Himself with His own finger long before. "And he gave unto Moses . . . two tables of testimony, tables of stone, written with the finger of God" (Exodus 31:18). Moses testified: "And the LORD delivered unto me two tables of stone written with the finger of God; and on them was written according to all the words, which the LORD spake with you in the mount out of the midst of the fire in the day of the assembly" (Deuteronomy 9:10).
There are only two other references to the "finger of God" in the Bible. When the Lord through Moses brought the great plagues upon Egypt, Pharaoh's magicians were able to imitate Moses' first few miracles, but soon their deceptive "magic" could no longer compare, and they had to confess, "This is the finger of God" (Exodus 8:19).
There is one final mention of God's finger in the New Testament. When the Pharisees charged that His power to cast evil spirits out of demon-possessed people had been given to Him by Satan, He affirmed rather, "I with the finger of God cast out devils" (Luke 11:20). Jesus is able both to forgive sins and to defeat Satan, because He is the Creator of the universe and all its laws. HMM