Exodus 5:22,23
And Moses returned to the LORD, and said, LORD, why have you so evil entreated this people? why is it that you have sent me?
Nave's Topical Index—AKJV

Numbers 11:11-15
And Moses said to 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 on me?
Nave's Topical Index—AKJV