John Gills Exposition of the Bible Commentary - 1 Samuel 31:13
And they took their bones, and buried them under a tree at Jabesh ,.... For though they burned the bodies, yet so as to preserve the bones; and these, together with the ashes of the parts burnt, they gathered up, and buried under a tree near this city; this tree is said to be an oak, 1 Chronicles 10:12 ; so Deborah, the nurse of Rebekah, was buried under an oak, Genesis 35:8 . The Jews generally interred their dead under some oak, as aforementioned writer observes F17 Pisgah-Sight... read more
Matthew Henry's Complete Commentary - 1 Samuel 31:8-13
The scripture makes no mention of the souls of Saul and his sons, what became of them after they were dead (secret things belong not to us), but of their bodies only. I. How they were basely abused by the Philistines. The day after the battle, when they had recovered their fatigue, they came to strip the slain, and, among the rest, found the bodies of Saul and his three sons, 1 Sam. 31:8. Saul's armour-bearer perhaps intended to honour his master by following the example of his self-murder,... read more