The Lord had told Moses what was to happen. The question is whether Moses told the people. We are not told. God did not say 'tell my people'. It would be interesting (though maybe speculative) to ask how the people would have reacted if Moses had told them; probably much the same reaction. The point either way would have been that the Lord has to be trusted. Knowing or not knowing the details often in advance has little to do with our acceptance and willingness to undergo what must happen. This is a space that only trust, even trust in great big unimaginable miracles can fill.
2012 - pBiblx2 Field Wise Bible System Version 2.0.9d - GPL3