I Samuel 19:15

But when Saul sent the messengers again to see David, and that with the command, "Bring him up to me in the bed," and when they only found the teraphim in the bed, and Saul charged Michal with this act of deceit, she replied, "He (David) said to me, Let me go; why should I kill thee?" - "Behold, teraphim were (laid) in the bed." The verb can be naturally supplied from Sa1 19:13. In the words "Why should I kill thee?" Michael intimates that she did not mean to let David escape, but was obliged to yield to his threat that he would kill her if she continued to refuse. This prevarication she seems to have considered perfectly justifiable.

Immediately after David's marriage, which one would have hoped would secure him Saul's affection, we find his troubles coming upon him faster than ever and Saul's enmity to him the cause of all. His death was vowed, and four fair escapes of his from the hurtful sword of Saul we have an account of in this chapter: the first by the prudent mediation of Jonathan (Sa1 19:1-7), the second by his own quickness (Sa1 19:8-10), the third by Michal's fidelity (Sa1 19:11-17), the fourth by Samuel's protection, and a change, for the present, wrought upon Saul (Sa1 19:18-24). Thus God has many ways of preserving his people. Providence is never at a loss.