Adultery is not only applicable to women, this also applies to men.
Matthew 5;28
Anyone who looks at a woman lustfully has already committed committed adultery with her in his heart. If your right eye causes you to sin, gouge it out and throw it away. It is better for you to lose one part of your body than for the whole body to be thrown into hell. And if your right hand causes you to sin, cut if off and throw it away. It is better for you to lose one part of your body than for your whole body to go into hell.In the old testament under the law of Moses, death is the punishment for adultery or killing of a human being.
Leviticus 24:17-21
If anyone takes the life of a human being, he must be put to death.Anyone who takes the life of an animal must make restitution—life for life. If anyone injures his neighbor, whatever he has done must be done to him: fracture for fracture, eye for eye, tooth for tooth. As he has injured the other, so he is to be injured.
With the coming of our Lord Jesus, (in the second testament) he wants to give the sinners the chance to repent because he wants to save you from the lake of fire. If you have not repented, and you die, you will have a second death, that is, go to Hades or hell, forever.
1Timothy 1:15
Christ Jesus came into the world to save sinners.
This is a beautiful story of the wisdom and mercy of our Lord Jesus.
John 8:7
The teachers of the law and the Pharisees brought in a woman caught in adultery. They made her stand before the group and said to Jesus, “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?” They were using this question as a trap, in order to have a basis for accusing him.Below is the story of an Iranian woman who will be stoned for adultery. (Are the accusers themselves sinless?)
But Jesus bent down and started to write on the ground with his fingers.When they kept on questioning him, he straightened up and said to them, "If any one of you is without sin, let him be the first to throw stone at her.” Again he stooped down and wrote on the ground.
At this, those who heard began to go away one at a time, the older ones first, until only Jesus was left, with the woman still standing there. Jesus straightened up and asked her, “Woman, where are they? Has no one condemned you?”
“No one, sir,” she said.
“Then neither do I condemn you,” Jesus declared. “Go now and leave your life of sin.”
http://edition.cnn.com/2010/WORLD/meast/07/08/iran.stoning/index.html?hpt=T2&fbid=JtUk4r45LiP