Surah 28. Al-Qasas, Ayah 14

This statement, almost entirely identical with 12:22 (where it refers to Joseph), stresses the supreme divine blessing of spiritual consciousness ('ilm in its deepest significance) combined with rational thought, as expressed in the concept of hukm, the "ability to judge [between right and wrong]". As is evident from 26:20 , Moses reached this spiritual maturity after the events described in verses {15} ff.

Full age may be taken to be mature youth, say between 18 and 30 years of age. By that time a person is fully established in life; his physical build is completed, and his mental and moral habits are formed. In this case, as Moses was good at heart, true and loyal to his people, and obedient and just to those among whom he lived, he was granted wisdom and knowledge from on high, to be used for the times of conflict which were coming for him. His internal development being complete, he now goes out into the outer world, where he is again tried and proved, until he gets his divine commission.