Moses seems like one of the glamorous characters in the Old Testament. God spoke to him from a burning bush, performed miracles through him, revealed His name to him, spoke to him face-to-face like a friend (Ex 33:11), revealed some of His glory to him, and used him to bring his people out of slavery and into the promised land. It sounds like a good life and ministry. If a somebody at a church event described that and invited people to come to the front to be prayed for to have "the ministry of Moses", you would have a stampede!
But we easily forget that Moses spent 40 years as a shepherd in the middle of nowhere before the burning bush. We forget that Pharoah wouldn't listen to him time after time and that the people blamed Moses for making their slavery worse (Ex 5:21). Not to mention the fact that when they left Egypt the people complained to Moses constantly (for example read the book of Leviticus!) leading to 40 years of wandering around in the desert, sometimes bringing him to the point of asking God to kill him (Num 11:15).
Do we want "the ministry of Moses" if it means years when we think nothing's happening, followed by years of people complaining? All of a sudden it doesn't look so glamorous! When Moses is trying to get out of the job God has got for him, God responds by telling Moses "I am the Lord" and "I will go with you". God calls us to obedience. At times that may be exciting, at times it may be uncomfortable or difficult. God promises us the same thing He promises Moses. He is God. And He will go with us