In our parsha we read of the Meraglim, the spies who were sent by Moshe in the second year after they left Egypt to spy out the land of Israel, as preparation to enter into it. We know that because of the slanderous report that they brought back to Moshe, they, along with all of Bnei Yisrael, were condemned to wander another 38 years in the desert, during which time all of the people of that generation died out, before they were finally allowed to enter the land.

After a somewhat demoralizing account of what the spies saw on their excursion –Enemies! Fortified cities! Children of giants! – the verses there state (Bamidbar 13: 30-31):

וַיַּהַס כָּלֵב אֶת הָעָם אֶל מֹשֶׁה וַיֹּאמֶר עָלֹה נַעֲלֶה וְיָרַשְׁנוּ אֹתָהּ כִּי יָכוֹל נוּכַל לָהּ:
וְהָאֲנָשִׁים אֲשֶׁר עָלוּ עִמּוֹ אָמְרוּ לֹא נוּכַל לַעֲלוֹת אֶל הָעָם כִּי חָזָק הוּא מִמֶּנּוּ

Caleb silenced the people to [hear about] Moses, and he said, “We can surely go up and take possession of it, for we can indeed overcome it.”

But the men who went up with him said, “We are unable to go up against the people, for they are stronger than we [ממנו].

On this verse, Rabbi Chanina bar Papa comments (Sota 35a) that rather than reading the text as “they are stronger than we (ממנוּ – mimenu)”, it can be read alternatively as, “they are stronger than Him (ממנוֹ – mimeno)” – that is, God. They are in essence saying that God Himself is not strong enough to go up against the enemies in the land and help Bnei Yisrael succeed in overcoming them!