Exodus 32:15

Exo 32:15 And Moses turned, and went down from the mount, and the two tables of the testimony [were] in his hand: the tables [were] written on both their sides; on the one side and on the other [were] they written.

Ver. 15. Written on both their sides. ] See the like in other mystical books. Eze 2:10 Rev 5:1