Musar zu Dewarim 9:4

“Say not to yourselves, when the Lord your God has thrust them from your path, saying, ‘The Lord has enabled us to possess this land because of our virtues, etc.’ It is not because of your virtues and your rectitude, etc.” (Deuteronomy 9:4-5). We are warned with this not to imagine to ourselves that our success is from our righteousness and the rectitude of our hearts, but rather that we believe and know in our hearts that our success is from the kindness of the Most High and His great goodness - and like the matter that was said by our father, Jacob (Genesis 32:11), “I am unworthy of all the kindness and all the truth.”