1. It is important to note that, while the New Testament does say that the death of Jesus was unjust, nevertheless God did act to deliberately bring it about, which is to say that men's motives for bringing about the death of Jesus were not the same as God's:
Achan died with his whole household. We don’t know how many were in this family, but we might reasonably surmise that what Achan did – rebelling with lust for silver and gold – received the approval of his children. Quite likely the family knew what was in the tent, but said nothing and may even have been secretly pleased about it. Just because they were not the ones to take the initial decision, in defiance of God’s command, does not mean that they had disapproved of Achan’s actions. Nothing is said, but God does not punish the innocent. If such punishment is brought upon the sons and daughters, then the children have been corrupted and complicit in some way in the crimes of the parents, perhaps by following their wrong example.