Thanks Omke, that is a very interesting question. It suggests that repentance is not required for full forgiveness. Accepted as doctrine that would of course lead to universalism, which, in many ways I hope is true also tends to rub against our sense of justice. There are two other possibilities it seems to me. One, if one is ignorant of sin, if one does not know that what one is doing is violating God's will, does God hold that against them. By saying they don't know what they are doing, Jesus may be saying they are doing this terrible act with a clear conscience and without any understanding that they are killing God himeslf and doing something truly terrible. On the other hand, Jesus may know their hearts and know even if they are aware or that they later become aware of what they did they would be repentant and find forgiveness. I also wonder if the thief on the cross when he said to Jesus remember me when you enter your kingdom was truly repenting, or was he merely exercising an early form of Pascal's wager, saying that because what would it hurt and it may even help. Ach, so many questions, so few answers.