AbstractVa?d and va?îd are the two important concepts that Kelam emphasizes. In daily life, the equivalent of va?d is reward and the equivalent of va?îd is sin. In other words, it is a reality that each devout person aims to gain rewards and therefore go to heaven and refrain himself from commiting sins and as such go to hellfire. However, because of the creation of human being, he has the potential to gain reward and also commit sin. To have such a structure indicates that his actions are entitled to be free and he has the right to choose the good and evil freely. Islam regards this basic principle: the reality of being in this world for humanbeing is to be tested and the hereafter is a place where humanbeings are questioned for their good or bad deeds. For this reason the Almighty Creator has given them the reason, and also informed them which deeds involves sins and good deeds. He promised the obedient the reward and warned the rebels of punishment.