I took the time to compare the different accounts in 1-2 Samuel and 1-2 Kings with 1-2 Chronicles.
I compared both the Masoretic Text (based on the New World Translation) and the Septuagint (based on NETS).
Since apologists usually can weasel out of contradictions in things such as whether Jehovah feels regret or he doesn't, but numbers are much harder to explain when they're different, I have made a list of the differences in the numbers expressed in the various scriptures.
Judge for yourself. How can there be so many differences in the numbers of things? There are multiple differences in the same chapter sometimes!
|Scripture 1||Scripture 2||Scripture 3||MT1||LXX1||MT2||LXX2||MT3||LXX3|
|2 Samuel 8:4||1 Chronicles 18:4||1,700||1,000||1,000||1,000||NA||NA|
|2 Samuel 8:4||1 Chronicles 18:4||(included)||7,000||7,000||7,000||NA||NA|
|2 Samuel 8:13||1 Chronicles 18:12||Psalm 60 (59 in LXX) superscript||18,000||18,000||18,000||18,000||12,000||12,000|
|2 Samuel 10:18||1 Chronicles 19:18||700||700||7,000||7,000||NA||NA|
|2 Samuel 24:9||1 Chronicles 21:5||800,000||800,000||1,100,000||1,100,000||NA||NA|
|2 Samuel 24:9||1 Chronicles 21:5||500,000||500,000||470,000||480,000||NA||NA|
|2 Samuel 24:13||1 Chronicles 21:12||7||3||3||3||NA||NA|
|2 Samuel 24:24||1 Chronicles 21:25||50 silver||50 silver||600 gold||600 gold||NA||NA|
|1 Kings 7:26||2 Chronicles 4:5||2,000||(omits)||3,000||3,000||NA||NA|
|1 Kings 9:23||2 Chronicles 8:10||550||(omits)||250||250||NA||NA|
|1 Kings 9:28||2 Chronicles 8:18||420||120||450||450||NA||NA|
|1 Kings 10:26||2 Chronicles 9:25||1,400||4,000||4,000||4,000||NA||NA|