Moshe reminded us when we reacted with doubt and skepticism we rebuked G-d and HIS love towards us.
Our sages wrote; “Moses then reminded the Jewish people how they reacted to the scouts’ report after they had spied out the Land of Israel, accusing G‑d of exhibiting ill will toward them.
[Moses said to the Jewish people,] “You slandered G‑d in your tents, saying ‘G‑d took us out of Egypt out of His hatred of us.’ ” Deuteronomy 1:27
The Rebbe explains: “Until the Final Redemption, when there will no longer be any obstacles impeding the full revelation of G‑d’s goodness, opportunities will unfortunately remain to mistake G‑d’s love for us for cruelty. Our challenge, until the Messianic Era, is to remain fully aware that G‑d is at all times manifesting His love for us, even if it occasionally appears exactly the opposite. Remaining conscious of this love will inspire us to reciprocate it by fulfilling His will to our utmost ability. This, in turn, will eliminate the last remaining impediments to the Final Redemption.1 Likutei Sichot, vol. 34, p. 23.