2:39 Achish - A king, but subject and tributary, to Solomon. Permitted to enjoy the title and honour of a king, but not the full power; whence it was, that Achish could not keep these servants though they had fled to him for protection; but suffered Shimei to take them away from his royal city.

1 Kings 2:39 Parallel Commentaries

What Manner of Man Ought not to Come to Rule.
Wherefore let every one measure himself wisely, lest he venture to assume a place of rule, while in himself vice still reigns unto condemnation; lest one whom his own guilt depraves desire to become an intercessor for the faults of others. For on this account it is said to Moses by the supernal voice, Speak unto Aaron; Whosoever he be of thy seed throughout their generations that hath a blemish, he shall not offer loaves of bread to the Lord his God (Lev. xxi. 17). And it is also immediately subjoined; …
Leo the Great—Writings of Leo the Great

Authorship of the Pentateuch.
The term Pentateuch is composed of the two Greek words, pente, five, and teuchos, which in later Alexandrine usage signified book. It denotes, therefore, the collection of five books; or, the five books of the law considered as a whole. 1. In our inquiries respecting the authorship of the Pentateuch, we begin with the undisputed fact that it existed in its present form in the days of Christ and his apostles, and had so existed from the time of Ezra. When the translators of the Greek version, …
E. P. Barrows—Companion to the Bible

Barzillai
BY REV. GEORGE MILLIGAN, M.A., D.D. "There is nothing," says Socrates to Cephalus in the Republic, "I like better than conversing with aged men. For I regard them as travellers who have gone a journey which I too may have to go, and of whom it is right to learn the character of the way, whether it is rugged or difficult, or smooth and easy" (p. 328 E.). It is to such an aged traveller that we are introduced in the person of Barzillai the Gileadite. And though he is one of the lesser-known characters …
George Milligan—Men of the Bible; Some Lesser-Known