Thus hath it been sent down from the heaven of the Will of your Lord, the Lord of Revelation.
Bahá'u'lláh... The decrees of the Sovereign Ordainer, as related to fate and predestination, are of two kinds. Both are to be obeyed and accepted. The one is irrevocable, the other is, as termed by men, impending. To the former all must unreservedly submit, inasmuch as it is fixed and settled. God however, is able to alter or repeal it. As the harm that must result from such a change will be greater than if the decree had remained unaltered, all, therefore, should willingly acquiesce in what God hath willed and confidently abide by the same.
Bahá'u'lláh