The wilderness was a place of judgment for Israel's sin, but Moses saw it also as a stage for God's incredible mercy and power, proving the Egyptians wrong.
Moses' argument in Deuteronomy 9:28 hinges on the fact that Israel’s continued existence in the wilderness, despite their rebellion, actually refutes the idea that God hated them or was unable to act.
God's Power on Display
Consider the Egyptian perspective Moses wants to counter: 'God couldn't get them to the promised land.' But Moses reminds God (and us) that God did bring them out of Egypt, a feat of immense power that astonished the Egyptians themselves. Their continued survival in a harsh desert, sustained by God's daily provision (manna, water, clothing that didn't wear out), was a continuous demonstration of His power, not His inability.
God's Love Despite Disobedience
The second charge—that God 'hated them'—is also undermined by their survival. If God hated them, why hadn't He destroyed them immediately upon their sinning? Why had He provided for them, protected them, and continued to promise them a future? Their very preservation in the wilderness, a place often associated with divine judgment, paradoxically became evidence of God's enduring mercy and patience towards His chosen people, even when they repeatedly failed.