Sforno on Numbers 14:14

אשר עין בעין נראה. שכבר נראה בעין עין השגחתך עליהם: אשר עין בעין נראה, the entire verse illustrates graphically the visual experiences Israel had enjoyed in its relationship with G’d something that would make their committing the kind of sin on account of which their G’d would wipe them out unthinkable. [I paraphrased here. Ed.]