Thou shalt put the blessing upon Mount Gerizim, and the curse upon Mount Ebal - The etymology of these names may be supposed to cast some light on this institution. גרזים gerizzim, from גרז garaz, to cut, cut off, cut down; hence גרזים gerizzim, the cutters down, fellers, and reapers or harvest-men, this mountain being supposed to have its name from its great fertility, or the abundance of the crops it yielded, which is a possible case. Of עיבל ebal or eybal the root is not found in Hebrew; but in Arabic abala signifies rough, rugged, curled, etc.; and abalo, from the same root, signifies white stones, and a mountain in which such stones are found; alabalo, the mount of white stones. See Giggeius and Golius. And as it is supposed that the mountain had this name because of its barrenness, on this metaphorical interpretation the sense of the passage would appear to be the following: God will so superintend the land, and have it continually under the eye of his watchful providence, that no change can happen in it but according to his Divine counsel, so that its fertility shall ever be the consequence of the faithful obedience of its inhabitants, and a proof of the blessing of God upon it; on the contrary, its barrenness shall be a proof that the people have departed from their God, and that his curse has in consequence fallen upon the land. See the manner of placing these blessings and curses, Deuteronomy 27:12, etc. That Gerizim is very fruitful, and that Ebal is very barren, is the united testimony of all who have traveled in those parts. See Ludolf, Reland, Rab, Benjamin, and Mr. Maundrell. Sychem lies in the valley between these two mountains.

That the land of Judea was naturally very fertile, can scarcely be supposed by any who considers the accounts given of it by travelers; with the exception of a few districts, the whole land is dry, stony, and barren, and particularly all the southern parts of Judea, and all the environs of Jerusalem, most of which are represented as absolutely incapable of cultivation. How then could it ever support its vast number of inhabitants? By the especial providence of God. While God kept that people under his continual protection, their land was a paradise; they lent to all nations and borrowed from none. What has it been since? A demi-solitude, because that especial blessing no longer descends upon it. No land, says Calmet, was more fertile while under the benediction of God; none more barren when under his curse. Its present state is a proof of the declaration of Moses, Deuteronomy 28:23 : "The heaven over their head is brass; the earth under their feet, iron." The land itself, in its present state is an ample proof of the authenticity of the Pentateuch. Should facts of this kind be lost sight of by any who read the sacred writings?

Gilgal

Genesis 12:6 And Abram passed through the land to the place of Sichem, to the plain of Moreh. And the Canaanite was then in the land.

Joshua 5:9 And the LORD said to Joshua, This day have I rolled away the reproach of Egypt from off you...

Judges 7:1 Then Jerubbaal, who is Gideon, and all the people that were with him, rose up early, and pitched beside the well of Harod...

Josiah, a Pattern for the Ignorant.
"Because thine heart was tender, and thou hast humbled thyself before the Lord, when thou heardest what I spake against this place, and against the inhabitants thereof, that they should become a desolation and a curse, and hast rent thy clothes, and wept before Me; I also have heard thee, saith the Lord. Behold therefore, I will gather thee unto thy fathers, and thou shalt be gathered into thy grave in peace; and thine eyes shall not see all the evil which I will bring upon this place."--2 Kings …
John Henry Newman—Parochial and Plain Sermons, Vol. VIII

The Old Testament Canon from Its Beginning to Its Close.
The first important part of the Old Testament put together as a whole was the Pentateuch, or rather, the five books of Moses and Joshua. This was preceded by smaller documents, which one or more redactors embodied in it. The earliest things committed to writing were probably the ten words proceeding from Moses himself, afterwards enlarged into the ten commandments which exist at present in two recensions (Exod. xx., Deut. v.) It is true that we have the oldest form of the decalogue from the Jehovist …
Samuel Davidson—The Canon of the Bible

Deuteronomy
Owing to the comparatively loose nature of the connection between consecutive passages in the legislative section, it is difficult to present an adequate summary of the book of Deuteronomy. In the first section, i.-iv. 40, Moses, after reviewing the recent history of the people, and showing how it reveals Jehovah's love for Israel, earnestly urges upon them the duty of keeping His laws, reminding them of His spirituality and absoluteness. Then follows the appointment, iv. 41-43--here irrelevant (cf. …
John Edgar McFadyen—Introduction to the Old Testament