2 Samuel

David’s census was most likely a military census. Its purpose would have been to find the age and location of potential new draftees for service in the army. It was either intended to give David pride in the number of his supporters or was a sign of his fear of another rebellion. Either way, it showed his lack of faith in God.
David’s Song of Deliverance is nearly identical to Psalm 18. Perhaps 2 Samuel 22 was meant to be read aloud for instruction and Psalm 18 was meant to be sung or prayed as part of worship.
Barley was an essential grain for the Israelite people and their livestock (21:9). A failed barley crop could spell disaster for a whole community.
Kissing was a cultural means of showing respect, friendship, or reverence, as it is in many places today. A kiss was often given as a form of greeting or farewell (19:39). There are only three places in all of Scripture where kissing is connected with romance (Prov. 7:13, Song 1:2; 8:1.).
The forest of Ephraim was east of the Jordan River in Gilead. Gilead was known for its forests, and there David’s men would have a tactical advantage against a larger force.
When attacking a city, ropes with grappling hooks were often used to bring down its walls (17:13). Since most cities were built on hills, the attackers could simply pull the walls away and down the slopes of the hill.
A stiff penalty. The punishment for cursing God (Lev. 24:10–23), the king (Ex. 22:28), or one’s parents (Lev. 20:9) was death. Shimei cursed King David (2 Sam. 16:5–14), but later begged David’s forgiveness, and David forgave him (19:16–23).