ישעיהו, פרק ל׳, פסוק ח׳

God commands the prophet to create a permanent record of His warnings, specifically the message that relying on Egypt for help is entirely pointless. The instruction begins by urging the prophet to return to the people. Overwhelmed and shocked by their behavior, he had previously pulled away from them [אבן עזרא]. Now, he must face them again to deliver a lasting message.

The prophet is told to record his words in two distinct ways: on a tablet and in a book [רש״י, מצודת ציון]. The tablet is meant to be a standard writing board, much like the ones used for the Ten Commandments [מצודת ציון]. The writing process itself is designed to be a public event. The prophet is instructed to write the prophecy while standing directly in front of the people, ensuring they witness the documentation firsthand [רד״ק, שד״ל, אברבנאל]. Alternatively, this instruction means the physical tablet is to be left in their possession for safekeeping [שד״ל, ביאור שטיינזלץ].

The dual method of using both a tablet and a book serves a specific purpose, addressing two different audiences across time [מלבי״ם]. The tablet is an accessible object intended to remain with the current generation as a constant, living reminder. The book, however, requires deep engraving to ensure it withstands the test of time, preserving the message for future generations.

This careful recording acts as an eternal witness. When the day of disaster and destruction finally arrives [אברבנאל], the written record will prove that the tragedy did not happen by chance. It will show both the current generation and those who follow that the punishment was fully justified, a direct result of their sins and their stubborn refusal to listen to repeated warnings [רד״ק, מצודת דוד]. Just as the recording methods address different times, the timeline of the testimony spans across eras. It serves as a testament for the remainder of the current generation's lifetime, while also standing as an everlasting witness for all of history [מלבי״ם].