Translation:

105. And say: "Work (righteousness): soon will Allah observe your work and His apostle and the believers: soon will ye be brought back to the knower of what is hidden and what is open: then will He show you the truth of all that ye did."

Notes (Tafseer)

1353. The repentant should be encouraged, after their repentance, to amend their conduct. The kindly interest of their brethren in them will strengthen them in virtue and blot out their past. When they go back into Eternity, they will understand the healing grace which saved them, just as the evil ones will then have their eyes opened to the real truth of their spiritual degradation (ix. 94). The similar words, in verse 84 and here, clench the contrast.