Put them in an earthen vessel— To preserve them from fire and moisture. See Calmet. It was common with the ancients to put their writings into earthen vessels. Origen found at Jericho a version of the Scriptures hid in an earthen pot. See Job 19:23-24.
Related Commentaries of Jeremiah 32:14
Jeremiah 32:14
14 Thus saith the LORD of hosts, the God of Israel; Take these evidences, this evidence of the purchase, both which is sealed, and this evidence which is open; and put them in an earthen vessel, that they may continue many days.