Creation Points to Resurrection

Then Allah, glory be to Him, reminds mankind of the evidence of the Resurrection through what they observe of their own creation's beginning, following the Quranic method of using the creation's origin as evidence for the Resurrection. He says, 'So let man observe from what he was created.'

Meaning, let him look with thought and reasoning to know that He who began his creation from a sperm-drop is able to resurrect him.

Then He mentioned the subject of inference and the Resurrection by saying, 'Indeed, He is able to bring him back.'

Meaning, He is capable of returning him to Him on the Day of Resurrection just as He is capable of creating him from water. This is the correct interpretation of the verse.

Then He warns [with] His saying, 'On the Day when secrets will be put to trial.'

Meaning, they will be tested, and Muqatil said: they will appear and be revealed. You say you have tested something to uncover its hidden parts and what was concealed.

Innermost matters is the plural of innermost matter; it refers to God's innermost matters that lie between Him and His servant, in both outward and inward aspects. Faith is among the innermost matters, and His laws are among the innermost matters.

Then that humiliation will be tested that day until its good is revealed from its evil, its deliverer from its destroyer, and what was for God from what was not for Him.

And there is a subtle point in describing deeds as secret: deeds are the results of inward states.

So whoever has a righteous inner state, his actions will be righteous; then his inner state appears on his face as light, radiance, and modesty, and whoever's inner state...

His deeds were corrupt, following his inner self; no regard was paid to his outward appearance, so his inner state appeared on his face as blackness, darkness, and ugliness.