Albert Barnes' Notes on the Whole Bible - 2 Samuel 24:20
And his servants - In Chronicles “his four sons,” namely, David’s. It is very possible that David may have taken his sons with him, as well as his elders, and Gad’s original narrative may have mentioned the circumstance, which the compiler of this chapter did not care to specify, and so used the general term “his servants.” read more
Albert Barnes' Notes on the Whole Bible - 2 Samuel 24:17
Compare the passage in Chronicles. The account here is abridged; and 2 Samuel 24:18 has the appearance of being the original statement. read more