Translation:

51. We will without doubt help Our apostles and those who believe (both) in this world's life and on the Day when the Witnesses will stand forth

Notes (Tafseer)

4424. The Day of Judgment is described as "the Day when Witnesses will stand forth". This description implies two things: (1) that there man will be judged justly; his past actions and his faculties and opportunities will be witnesses as to the use he made of them (xxiv. 24); in fact he will himself be a witness against himself (vi. 130); and the prophets and just men will bear witness to the fact that they preached and warned men (xxxix. 69; ii. 133).