Exodus 18:18

18:18 You will surely wear out, both you and these people who are with you, for this is too heavy a burden for you; you are not able to do it by yourself.

Numbers 11:11-14

11:11 And Moses said to the Lord, “Why have you afflicted your servant? Why have I not found favor in your sight, that you lay the burden of this entire people on me? 11:12 Did I conceive this entire people? Did I give birth to them, that you should say to me, ‘Carry them in your arms, as a foster father bears a nursing child,’ to the land which you swore to their fathers? 11:13 From where shall I get meat to give to this entire people, for they cry to me, ‘Give us meat, that we may eat!’ 11:14 I am not able to bear this entire people alone, because it is too heavy for me!

Numbers 11:17

11:17 Then I will come down and speak with you there, and I will take part of the spirit that is on you, and will put it on them, and they will bear some of the burden of the people with you, so that you do not bear it all by yourself.