Translation:

25. On that Day Allah will pay them back (all) their just dues and they will realize that Allah is the (very) Truth that makes all things manifest.

Notes (Tafseer)

2977. All that we thought of hiding will be clear as day before Allah's Judgment Seat, because He is the very essence of Truth and Reality-He is the true Light (xxiv. 35), of which all physical light is merely a type or reflection.