Deuteronomy 32:40-48

When Moses had finished his song, which he delivered not only in the hearing of the people, but particularly of Joshua, his successor, as if that he might be a witness both for the LORD and for himself, he makes a short observation upon the whole: and as a dying pastor, again, and again, affectionately entreats them to be wise unto salvation after his departure. See a beautiful example of this kind in Paul. Acts 20:28.