Deuteronomy 1:41

Then you said to me, ‘We have sinned against the Lord; we will indeed go up and fight, just as the Lord our God commanded us.’ And every man of you girded on his weapons of war, and regarded it as easy to go up into the hill country.

Numbers 14:39-45

When Moses spoke these words to all the sons of Israel, the people mourned greatly.

Numbers 22:34

Balaam said to the angel of the Lord, “I have sinned, for I did not know that you were standing in the way against me. Now then, if it is displeasing to you, I will turn back.”

Proverbs 19:3

The foolishness of man ruins his way,
And his heart rages against the Lord.

Treasury of Scripture Knowledge

Summary

Then ye answered and said unto me, We have sinned against the LORD, we will go up and fight, according to all that the LORD our God commanded us. And when ye had girded on every man his weapons of war, ye were ready to go up into the hill.

Bible References

We have sinned

Numbers 14:39
When Moses spoke these words to all the sons of Israel, the people mourned greatly.
Numbers 22:34
Balaam said to the angel of the Lord, “I have sinned, for I did not know that you were standing in the way against me. Now then, if it is displeasing to you, I will turn back.”
Proverbs 19:3
The foolishness of man ruins his way,
And his heart rages against the Lord.