With the anointing of Aaron, Moses hands over something he will never have again. He lovingly gives up a part of his leadership, so that the people can be better served.
Numbers 27:12-23: “And G-d said to Moses, Go up to this Mt. Avarim and see the land that I have given to the Children of Israel.” So begins a moving dialogue between G-d and Moses towards the end of Moses’ life.
Thus shall you bless the children of Israel, it is to be said to them: May G-d bless you and keep you, May G-d shine His face upon you and be gracious to you, May G-d turn His face to you and grant you peace.