The limit on man's part that prevented him from having a written revelation until the fifteenth century B.C. is the absence of relevant technology and literacy for making records permanent.
A written revelation is a record of prophetic teachings that strengthen the faith of people in God by providing access to the revelation after many years of the first encounter.
However, people remained unable to have a written revelation until the fifteenth century B.C. when words started to be written down on parchments and tablets.
Thus, the limit on man's part that prevented him from having a written revelation until the fifteenth century B.C. is the absence of relevant technology and literacy for making records permanent.
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