12 She let him out of a window, and he made his escape. 13 Then Michal took a dummy god and put it in the bed, placed a wig of goat's hair on its head, and threw a quilt over it. 14 When Saul's men arrived to get David, she said, "He's sick in bed." 15 Saul sent his men back, ordering them, "Bring him, bed and all, so I can kill him." 16 When the men entered the room, all they found in the bed was the dummy god with its goat-hair wig! 17 Saul stormed at Michal: "How could you play tricks on me like this? You sided with my enemy, and now he's gotten away!" Michal said, "He threatened me. He said, 'Help me out of here or I'll kill you.'"
18 David made good his escape and went to Samuel at Ramah and told him everything Saul had done to him. Then he and Samuel withdrew to the privacy of Naioth.
Matthew Henry's Commentary on 1 Samuel 19:12-18
Commentary on 1 Samuel 19:11-24
(Read 1 Samuel 19:11-24)
Michal's stratagem to gain time till David got to a distance was allowable, but her falsehood had not even the plea of necessity to excuse it, and manifests that she was not influenced by the same spirit of piety which had dictated Jonathan's language to Saul. In flying to Samuel, David made God his refuge. Samuel, as a prophet, was best able to advise him what to do in this day of distress. He met with little rest or satisfaction in Saul's court, therefore went to seek it in Samuel's church. What little pleasure is to be had in this world, those have who live a life of communion with God; to that David returned in the time of trouble. So impatient was Saul after David's blood, so restless against him, that although baffled by one providence after another, he could not see that David was under the special protection of God. And when God will take this way to protect David, even Saul prophesies. Many have great gifts, yet no grace; they may prophesy in Christ's name, yet are disowned by him. Let us daily seek for renewing grace, which shall be in us as a well of water springing up into everlasting life. Let us cleave to truth and holiness with full purpose of heart. In every danger and trouble, let us seek protection, comfort, and direction in God's ordinances.