The Mekhilta DeRabbi Yishmael reveals a remarkable exchange between God and Moses concerning the Israelites' complaints in the wilderness. The verse states: "I have heard the cavilings of the children of Israel" (Exodus 16:12), and God's response to Moses carries far more weight than a simple acknowledgment of grumbling.
The Holy One, Blessed be He, said to Moses: "It is revealed to Me what the congregation of Israel have said and what they are destined to say." This single statement contains two dimensions of divine knowledge. God hears not only the present complaints but sees the future ones as well. He knows that the people are murmuring now about the lack of food in the wilderness, and He already knows that they will complain again, as recorded in (Numbers 11:4), when the "mixed multitude" among them will cry out for meat.
The Mekhilta's teaching here reveals something striking about God's patience. Despite knowing in advance that the Israelites would continue to complain, grumble, and rebel throughout their forty years in the wilderness, God still responded to their immediate need. He sent the manna. He provided the quail. He did not withhold sustenance because He foresaw ingratitude. Divine generosity, in this reading, is not contingent on the recipient's future behavior.
God's omniscience, His knowledge of what Israel "have said and are destined to say," makes His continued care even more remarkable. A human benefactor who knew his gifts would be met with future complaints might refuse to give at all. God, knowing everything, gives anyway. The manna fell each morning not because Israel deserved it, but because God's mercy operates beyond the calculus of human merit and ingratitude.