The very act of sin is a transgression of the law.
Sin is a process.
WHEN it is finished, bringeth forth death. True, the devil fired all the rounds he possessed in his diabolical pistol at the Lord in the wilderness. But to be shot at is far different than being shot at and hit. He might as well have been firing blanks when it came to the subject of his intended target. Jesus Christ was in no way affected by the enemy's temptations.