Whether it was in the cave of Adullam, or that of Engedi, that David prayed this prayer, is not material; it is plain that he was in distress. It was a great disgrace to so great a soldier, so great a courtier, to be put to such shifts for his own safety, and a great terror to be so hotly pursued and every moment in expectation of death; yet then he had such a presence of mind as to pray this prayer, and, wherever he was, still had his religion about him. Prayers and tears were his weapons, and, when he durst not stretch forth his hands against his prince, he lifted them up to his God. There is no cave so deep, so dark, but we may out of it send up our prayers, and our souls in prayer, to God. He calls this prayer Maschil - a psalm of instruction, because of the good lessons he had himself learnt in the cave, learnt on his knees, which he desired to teach others. In these verses observe,

I.How David complained to God, Psa 142:1, Psa 142:2. When the danger was over he was not ashamed to own (as great spirits sometimes are) the fright he had been in and the application he had made to God. Let no men of the first rank think it any diminution or disparagement to them, when they are in affliction, to cry to God, and to cry like children to their parents when any thing frightens them. David poured out his complaint, which denotes a free and full complaint; he was copious and particular in it. His heart was as full of his grievances as it could hold, but he made himself easy by pouring them out before the Lord; and this he did with great fervency: He cried unto the Lord with his voice, with the voice of his mind (so some think), for, being hidden in the cave, he durst not speak with an audible voice, lest that should betray him; but mental prayer is vocal to God, and he hears the groanings which cannot, or dare not, be uttered, Rom 8:26. Two things David laid open to God, in this complaint: - 1. His distress. He exhibited a remonstrance or memorial of his case: I showed before him my trouble, and all the circumstances of it. He did not prescribe to God, nor show him his trouble, as if God did not know it without his showing; but as one that put a confidence in God, desired to keep up communion with him, and was willing to refer himself entirely to him, he unbosomed himself to him, humbly laid the matter before him, and then cheerfully left it with him. We are apt to show our trouble too much to ourselves, aggravating it, and poring upon it, which does us no service, whereas by showing it to God we might cast the care upon him who careth for us, and thereby ease ourselves. Nor should we allow of any complaint to ourselves or others which we cannot with due decency and sincerity of devotion make to God, and stand to before him. 2. His desire. When he made his complaint he made his supplication (Psa 142:1), not claiming relief as a debt, but humbly begging it as a favour. Complainants must be suppliants, for God will be sought unto.

II.What he complained of: "In the way wherein I walked, suspecting no danger, have they privily laid a snare for me, to entrap me." Saul gave Michal his daughter to David on purpose that she might be a snare to him, Sa1 18:21. This he complains of to God, that every thing was done with a design against him. If he had gone out of his way, and met with snares, he might have thanked himself; but when he met with them in the way of his duty he might with humble boldness tell God of them.

III.What comforted him in the midst of these complaints (Psa 142:3): "When my spirit was overwhelmed within me, and ready to sink under the burden of grief and fear, when I was quite at a loss and ready to despair, then thou knewest my path, that is, then it was a pleasure to me to think that thou knewest it. Thou knewest my sincerity, the right path which I have walked in, and that I am not such a one as my persecutors represent me. Thou knewest my condition in all the particulars of it; when my spirit was so overwhelmed that I could not distinctly show it, this comforted me, that thou knewest it, Job 23:10. Thou knewest it, that is, thou didst protect, preserve, and secure it," Psa 31:7; Deu 2:7.

I poured out my complaint before him,.... Not a complaint of the Lord and of his providences, but of himself; of his sins, and particularly his unbelief; and also of them that persecuted and afflicted him; which he "poured" out from the abundance of his heart, and in the bitterness of his soul; denoting the fulness of his prayer, his freedom in it, the power and fervency of it, and which he left before the Lord, and submitted to his will; see Psa 102:1, title;

I showed before him my trouble; the present trouble he was in, being pursued and surrounded by Saul and his army; not as if the Lord was ignorant of it, and did not see and observe it, but to affect his own soul with it, to exercise grace under it, and ease his burdened and distressed mind; the best of men have their troubles both within and without, and the way to be rid of them is to carry them to the Lord.