Misinterpretations often portray David as engaging in arbitrary cruelty or genocide without context, ignoring the ancient Near Eastern practice of such executions in warfare and Moab's prior hostility, including the killing of David's family members as per Ruth 4 and 1 Samuel 22; others erroneously apply modern pacifist ethics to condemn the event as immoral, overlooking its role in God's covenantal judgments and Israel's defensive expansions, or allegorize the 'lines' as symbolic of divine mercy ratios detached from historical conquest narratives.
II Samuel 8:2
King James Version (1769)
2 And he smote Moab, and measured them with a line, casting them down to the ground; even with two lines measured he to put to death, and with one full line to keep alive. And so the Moabites became David’s servants, and brought gifts.
This passage recounts David's decisive victory over Moab, where he employed a measuring line to determine the fate of captives—executing two-thirds and sparing one-third—resulting in the Moabites becoming his servants who paid tribute; it highlights God's fulfillment of promises to give David dominion over surrounding nations, demonstrating divine favor and the expansion of Israel's kingdom through righteous warfare against historical enemies who had previously oppressed Israelites.