Let me begin by sharing the scripture that I'm referring to (all scripture is quoted from the NASB):
John 8:1-11 1”But Jesus went to the Mount of Olives. 2Early in the morning He came again into the temple, and all the people were coming to Him; and He sat down and began to teach them. 3The scribes and the Pharisees brought a woman caught in adultery, and having set her in the center of the court, 4they said to Him, ‘Teacher, this woman has been caught in adultery, in the very act. 5Now in the Law Moses commanded us to stone such women; what then do You say?’ 6They were saying this, testing Him, so that they might have grounds for accusing Him. But Jesus stooped down and with His finger wrote on the ground. 7But when they persisted in asking Him, He straightened up, and said to them, ‘He who is without sin among you, let him be the first to throw a stone at her.’ 8Again He stooped down and wrote on the ground. 9When they heard it, they began to go out one by one, beginning with the older ones, and He was left alone, and the woman, where she was, in the center of the court. 10Straightening up, Jesus said to her, ‘Woman, where are they? Did no one condemn you?’ 11She said, ‘No one, Lord.’ And Jesus said, ‘I do not condemn you, either Go From now on sin no more.’
The contrast we have, between the self-satisfied religious police on the one hand and the idea of a woman, who recognizes her true condition on the other, is the contrast between those who will accept or reject Christ. We see that people who have an experiential grasp of their needs are the same people who will grasp grace. People who do not understand their true condition or after a while become smug and self-satisfied and don’t understand grace are people who often won’t give it as well. We become a people who are so focused on our self-righteousness that we can no longer focus on our own condition.
So, where is the guy? Both parties are also to be condemned; the man and the woman. Look in Deuteronomy 22:22. There you will find the mosaic requirement: “If a man is found lying with a married woman, then both of them shall die; the man who lay with the woman and the woman; thus you shall purge the evil from Israel.” They basically violated the Law by not bringing him before Jesus and they also violated the Law when they set up a trap in the first place. In either case, they are so concerned with the Law that they are ready to violate it in an attempt to trap Jesus.