18:30 Went forth - To war against the Israelites, being provoked by their former losses, and especially by that act of David's.

1 Samuel 18:30 Parallel Commentaries

Ramah. Ramathaim Zophim. Gibeah.
There was a certain Ramah, in the tribe of Benjamin, Joshua 18:25, and that within sight of Jerusalem, as it seems, Judges 19:13; where it is named with Gibeah:--and elsewhere, Hosea 5:8; which towns were not much distant. See 1 Samuel 22:6; "Saul sat in Gibeah, under a grove in Ramah." Here the Gemarists trifle: "Whence is it (say they) that Ramah is placed near Gibea? To hint to you, that the speech of Samuel of Ramah was the cause, why Saul remained two years and a half in Gibeah." They blindly …
John Lightfoot—From the Talmud and Hebraica

The Sixth Commandment
Thou shalt not kill.' Exod 20: 13. In this commandment is a sin forbidden, which is murder, Thou shalt not kill,' and a duty implied, which is, to preserve our own life, and the life of others. The sin forbidden is murder: Thou shalt not kill.' Here two things are to be understood, the not injuring another, nor ourselves. I. The not injuring another. [1] We must not injure another in his name. A good name is a precious balsam.' It is a great cruelty to murder a man in his name. We injure others in …
Thomas Watson—The Ten Commandments

Samuel
Alike from the literary and the historical point of view, the book[1] of Samuel stands midway between the book of Judges and the book of Kings. As we have already seen, the Deuteronomic book of Judges in all probability ran into Samuel and ended in ch. xii.; while the story of David, begun in Samuel, embraces the first two chapters of the first book of Kings. The book of Samuel is not very happily named, as much of it is devoted to Saul and the greater part to David; yet it is not altogether inappropriate, …
John Edgar McFadyen—Introduction to the Old Testament