Not for any respect he had to David, but for his own malicious and wicked ends, that he might make use of her love to David, to insnare and ruin him, which he thought might be done many ways, whereof one is here expressed.
Related Commentaries of 1 Samuel 18:20
1 Samuel 18:20
20 And Michal Saul's daughter loved David: and they told Saul, and the thing pleased him.d