اَلْعَدَد 1:3

مِنِ ٱبْنِ عِشْرِينَ سَنَةً فَصَاعِدًا، كُلَّ خَارِجٍ لِلْحَرْبِ فِي إِسْرَائِيلَ. تَحْسُبُهُمْ أَنْتَ وَهَارُونُ حَسَبَ أَجْنَادِهِمْ.

From twenty years old and upward, all that are able to go forth to war in Israel: thou and Aaron shall number them by their armies.