Are you familiar with John 8? If not, this is where the teachers of the Law and Pharisees used a woman caught in adultery as a trap in their efforts to accuse Jesus of wrongdoing. They asked: "Teacher, this woman was caught in the act of adultery. In the Law Moses commanded us to stone such women. Now what do you say?".
You get the idea.
Now am I the only one, or have you every toiled and wondered at why Jesus began writing in the dirt? Not only that, but what was He writing? In a cell group meeting we discussed this. First we must come to the conclusion that the teachers of the Law and Pharisees were very familiar with God's Word at that time. I'm sure anyone can agree that they were quite acquainted with knowledge of the Word. In fact they probably lived, breathed, slept and ate it. So back to the question, what was Jesus writing in the dirt? Theory is that He was writing their names in the dirt. Jeremiah 17:13 states: "All that forsake thee shall be ashamed, and they that depart from Me shall be written in the earth..." Isn't that interesting! It would be logical to think if Jesus did in fact begin to write their names in the earth, He was pushing some buttons (especially after saying "If any one of you is without sin, let him be the first to throw a stone at her.") How displeasing for the teachers of the Law and Pharisees it would have been to see this calm man peacefully stoop down and write their names in the dirt! Of course they knew what this meant, Jesus was blatantly telling the truth, they had forsaken the Lord. Jesus never shrinked nor shied away from the truth.
Theory or no theory concerning what He wrote in the dirt, He is one wise ultra cool Man-God.