And Moses {l} let his father in law depart; and he went his way into his own land.

(l) Read Nu 10:29.Exodus 18:27 Parallel Commentaries

The Development of the Earlier Old Testament Laws
[Sidenote: First the principle, and then the detailed laws] If the canon of the New Testament had remained open as long as did that of the Old, there is little doubt that it also would have contained many laws, legal precedents, and ecclesiastical histories. From the writings of the Church Fathers and the records of the Catholic Church it is possible to conjecture what these in general would have been. The early history of Christianity illustrates the universal fact that the broad principles are …
Charles Foster Kent—The Origin & Permanent Value of the Old Testament

That the Ruler Relax not his Care for the Things that are Within in his Occupation among the Things that are Without, nor Neglect to Provide
The ruler should not relax his care for the things that are within in his occupation among the things that are without, nor neglect to provide for the things that are without in his solicitude for the things that are within; lest either, given up to the things that are without, he fall away from his inmost concerns, or, occupied only with the things that are within bestow not on his neighbours outside himself what he owes them. For it is often the case that some, as if forgetting that they have …
Leo the Great—Writings of Leo the Great

Appendix xii. The Baptism of Proselytes
ONLY those who have made study of it can have any idea how large, and sometimes bewildering, is the literature on the subject of Jewish Proselytes and their Baptism. Our present remarks will be confined to the Baptism of Proselytes. 1. Generally, as regards proselytes (Gerim) we have to distinguish between the Ger ha-Shaar (proselyte of the gate) and Ger Toshabh (sojourner,' settled among Israel), and again the Ger hatstsedeq (proselyte of righteousness) and Ger habberith (proselyte of the covenant). …
Alfred Edersheim—The Life and Times of Jesus the Messiah

Exodus
The book of Exodus--so named in the Greek version from the march of Israel out of Egypt--opens upon a scene of oppression very different from the prosperity and triumph in which Genesis had closed. Israel is being cruelly crushed by the new dynasty which has arisen in Egypt (i.) and the story of the book is the story of her redemption. Ultimately it is Israel's God that is her redeemer, but He operates largely by human means; and the first step is the preparation of a deliverer, Moses, whose parentage, …
John Edgar McFadyen—Introduction to the Old Testament