Misinterpretations often portray Saul's proposal as genuine paternal generosity rewarding David's valor, ignoring the preceding context of Saul's murderous jealousy and the explicit revelation of his internal plot to use the Philistines as proxies for assassination; others might fault David for ambition in accepting, but the passage centers on Saul's deceit rather than David's agency, missing the theme of divine protection amid human treachery.
I Samuel 18:17
King James Version (1769)
17 And Saul said to David, Behold my elder daughter Merab, her will I give thee to wife: only be thou valiant for me, and fight the Lord’s battles. For Saul said, Let not mine hand be upon him, but let the hand of the Philistines be upon him.
Saul offers his eldest daughter Merab to David as a wife on the condition of continued bravery in fighting the Lord's battles, but secretly hopes the Philistines will kill him, revealing Saul's duplicitous jealousy toward David, whom God is elevating, and illustrating how envy can lead to treacherous schemes disguised as generosity.