Deuteronomy 1:9
And I spoke unto you at that time, saying, I am not able to bear you myself alone:
Exodus 18:18
You will surely wear away, both you, and this people that is with you: for this thing is too heavy for you; you are not able to perform it yourself alone.
Numbers 11:11-14
And Moses said unto the LORD, Why have you afflicted your servant? and why have I not found favor in your sight, that you lay the burden of all this people upon me?
Numbers 11:17
And I will come down and talk with you there: and I will take some of the spirit which is upon you, and will put it upon them; and they shall bear the burden of the people with you, that you bear it not yourself alone.