"And the Lord said to Joshua, 'Today I will begin to exalt you in the eyes of all Israel, so they may know that I am with you as I was with Moses'" NIV translation
Now, God tells Joshua that He will lift him up in the eyes of the people and, as we would say, make a name for him. It seems kind of odd that God would do this but, as we see, the purpose is so that Israel will be strengthened.
If you are a Christian, then, God has elevated you for a purpose! Our goal should be to find out why God is elevating us (our ministry) and to roll with it.
"'Tell the priests who carry the ark of the covenant: "When you reach the edge of the Jordan's waters, go and stand in the river."'" NIV translation
As we see here, Joshua is a messenger and is to deliver the instructions to the priests. This is a picture of the work of the Holy Spirit in the lives of believers. The Holy Spirit will guide us in the ways of God and will encourage us along the way. That is a big part of why God elevates us as Christians. As Paul said, we are to build each other up in the faith.
That is an easy way to tell the difference between self promotion and God's elevation of a believer. If the focus is not on building up the body of believers (church), then, it is self promotion and not God elevating someone.
"Joshua said to the Israelites, 'Come here and listen to the words of the Lord your God. This is how you will know that the living God is among you and that he will certainly drive out before you the Canaanites, Hittites, Hivites, Perizzites, Girgashites, Amorites and Jebusites. See, the ark of the covenant of the Lord of all the earth will go into the Jordan ahead of you.'" NIV translation
Next, Joshua explains to the people what is going to happen. This reminds us that God does not want to have secrets that He keeps from us. He does not ask us to walk blindly but to walk with Him as He leads the way through the Holy Spirit.
"'Now then choose twelve men from the tribes of Israel, one from each tribe. And as soon as the priests who carry the ark of the Lord - the Lord of all the earth - set foot in the Jordan, its waters flowing downstream will be cut off and stand up in a heap.'" NIV translation
Although he does not explain why, Joshua tells the people to choose one person from each tribe. He also goes on to explain that the Lord will make the way through the Jordan by stopping the river. Surely, these people would have heard the story of how God had done this same type of thing for their ancestors with Moses. They must have been excited to think that God was going to do something just as amazing with them. Are you excited at the expectation of God's signs and wonders displayed among you?