There are 2 causes that require to put science first from the worship
First: For your worship to be successful and legitimate. If the servant does not have knowledge in worship then worship will be damaged by worship worship pest.
Because at the beginning of time we have to know first who god in worship, that is knowing His character, His names, then just worship Him.
Without this, it can cause a khilimah souvenir. Because, if wrong mengitiqad nature of God, and His names then vain worship it.
Second: his heart has been overwhelmed by love for world affairs that have nothing to do with the hereafter, or a desire from the earthly thing that is always pictured in his heart.
If at the time of coincidence with the circumstances in his nyanwanya in pull, then there is no place for God in his heart
So, his heart is drowned in such conditions, his head turned upside down, his head to the world and his feet to God
His face only saw the world alone, while his back was nailed to God
If the face has turned away from Allah, come the veil.
If the veil of barrier between him and God has come down, it means that there is adzab it. the punishment is there, it can not be gone.
Because, the blazing fire, which is in the Qur'an, will only eat those who are consumed.