I heard from Imam Ja’far Sadiq (a.s) that he said with regard to change of destiny (Bada) by Allah: That which Almighty Allah gave to the angels, they conveyed it to the prophets and the prophets in turn conveyed to the people [law of religion]. Therefore, in this instance it is not Bada, because it is called definite (Mahtum); and among the definite matters is that this son of mine is the Qaim.