As the Lord commanded Moses, &c. See Exodus 34:11,
12; Deuteronomy 31:7. So did Joshua: he left nothing undone This is a demonstration that Moses left in writing what the Lord commanded, as we read in the foregoing books, and that they were not written, as some have pretended, in later times. For it would have been impossible for Joshua to have executed every thing which had been commanded by Moses, unless he had had the book of the law before him for his direction.