כֹּ֗ל הָעֹבֵר֙ עַל־הַפְּקֻדִ֔ים מִבֶּ֛ן עֶשְׂרִ֥ים שָׁנָ֖ה וָמָ֑עְלָה יִתֵּ֖ן תְּרוּמַ֥ת יְהוָֽה׃
Every one that passeth among them that are numbered, from twenty years old and upward, shall give the offering of the LORD.
Read Jewish philosophical commentary on Exodus 30:14: and classical philosophical sources.