Ellicott's Commentary for English Readers - 1 Samuel 18:20
(20) And Michal Saul’s daughter loved David.—But the love of the younger of the two royal princesses for her father’s brilliant officer gave the unhappy king a fresh excuse to expose David’s life to peril, while at the same time he appeared to be endeavouring to carry out an old formal promise. read more
John Dummelow's Commentary on the Bible - 1 Samuel 18:1-30
The Love of Jonathan for David1 Samuel 18:6-30 of this chapter seem to be connected with 1 Samuel 16:14-23 and not to be taken from the same document as 1 Samuel 17:1 to 1 Samuel 18:5. LXX omits a large part of this section and only retains 1 Samuel 18:6-8; 1 Samuel 12; 1 Samuel 13-16, 20-21; 1 Samuel 22-26; 1 Samuel 27-29 a. In this case the LXX text gives an easy and straight forward account, and many suppose that it is the original. But the character of the LXX omissions in 1 Samuel 17... read more