וַיִּ֜פֶן וַיֵּ֤רֶד מֹשֶׁה֙ מִן־הָהָ֔ר וּשְׁנֵ֛י לֻחֹ֥ת הָעֵדֻ֖ת בְּיָד֑וֹ לֻחֹ֗ת כְּתֻבִים֙ מִשְּׁנֵ֣י עֶבְרֵיהֶ֔ם מִזֶּ֥ה וּמִזֶּ֖ה הֵ֥ם כְּתֻבִֽים׃
And Moses turned, and went down from the mount, with the two tables of the testimony in his hand; tables that were written on both their sides; on the one side and on the other were they written.
Read Jewish philosophical commentary on Exodus 32:15: and classical philosophical sources.