Hebrews 11:24-25 "By faith Moses, when he was come to years, refused to be called the son of Pharaoh's daughter; Choosing rather to suffer affliction with the people of God, than to enjoy the pleasures of sin for a season."

Which is followed by an account of some of the ways he proved his faith:

He forsook Egypt, his wealth and his position
He kept the passover
He sprinkled blood on the lintel so that the death angel would pass over
He led hundreds of thousands of people out of Egypt.  (Crabby, unhappy people)
He passed through the Red Sea on dry land
He led the Israelites to (not into) the promised land

Can you imagine being a prince in the house of Pharaoh and choosing the wilderness, dust, and forty years of wandering instead?  Moses is a huge example of faith.  He is larger than life.
And after all that, he made one mistake and God didn't let him lead  the people into the promised land.  You would think that after God made an example out of Moses' mistake that the people would do what God wanted them to.  But no.  They didn't.  Every generation is a new group of sinners.

Sometimes we get the idea that the people in the Bible were special.  But they were flawed, just like you and me.  They were ordinary people who did extraordinary things.

When God spoke to Moses from the burning bush, He told Moses that he was on holy ground.  But the thing that made it holy was God.  Any old bush would have done.

God can use anyone.  All that is necessary is a willing heart.