A God who does evil is no God at all. God has no likes and dislikes; He is above and beyond all traits and characteristics. So, how can He be hating or revengeful? He is love, He is mercy, He is goodness, He is wisdom, He is power. He gives what you ask; so, be careful what you ask. Learn to ask the really beneficial boons.
(From : Sai Veda, The Word of God, sayings of Bhagavan Sri Sathya Sai Baba)