I will be glad and rejoice in thy mercy - I will triumph and joy in thy mercy; that is, in the mercy which he had already experienced, and in that which he still hoped to enjoy. He had had abundant proofs of that mercy; he hoped for still further proofs of it; and he says that he would find his joy in that, and not in what idols could give.

For thou hast considered my trouble - In times past and now. He felt assured that his prayer would be regarded, and that God would relieve and deliver him.

Thou hast known my soul in adversities - In the troubles that have come upon me. That is, God had seen and known all the feelings of his heart in the time of adversity; his sorrow and anxiety; his hope and trust; his uncomplaining spirit; his feeling of entire dependence on God, and his belief that He would interpose to save him. God had not turned away from him, but had shown that he regarded with interest all his feelings, his desires, his hopes. It is much, in the time of trouble, to know that all our feelings are understood by God, that He sees all our sorrows, and that He will not be regardless of them. There are no states of mind more interesting than those which occur in adversities; there is no one who can fully understand the soul in adversities but God; there is no one but God who can entirely meet the needs of the soul in such seasons.

Thou hast known my soul in adversities - When all forsook me; when none could help me; when I could not save my own life; when my enemies were sure that I could not escape; then I found thee to be my Friend and Supporter. When friend, so called, finds it convenient not to know his friend in affliction and poverty, then thou didst acknowledge me as thine own, all worthless as I was. Human friendships may fail; but the Friend of sinners never fails. Cicero defines a real friend, Amicus certus in re incerta cernitor: "A friend in need is a friend indeed." Reader, such a Friend is the Lord.

I will be glad, and rejoice in thy mercy,.... Both because of the nature of it, which is large and abundant, free and sovereign, from everlasting to everlasting, and is communicated in and through Christ, and is a good ground of hope and trust; and because of the effects of it, or what it has produced; for to it are owing the covenant of grace, and all the sure mercies of it; the mission of Christ, and redemption by him; regeneration, and the forgiveness of sins, and even eternal life and glory; besides a multitude of blessings, deliverances, and salvations in Providence; on account of all which there is great reason for joy and gladness; of which the following are particulars;

for thou hast considered my trouble; inward, arising from indwelling sin, doubts and fears, desertions and darkness, and Satan's temptations; and outward, from the world, and the men of it, and by reason of bodily afflictions: now the Lord looks upon the troubles of his people, and upon them in them, with an eye of pity and compassion; he sympathizes with them; he considers the nature of their trouble, their weakness to bear it, and the best way, in tans, and time to deliver out of it; he working all things after the counsel of his own will; see Exodus 3:7;

thou hast known my soul in adversities; that is, the Lord had took notice of him, approved of him, loved him, had visited him, and made known his love to him, and owned him for his own, and had chosen him in the furnace of affliction; a time and season when oftentimes friends and acquaintance are shy, and will not look upon men, know them, and own them; but the Lord does otherwise, and which is another reason of joy and gladness in his mercy.

7 I will be glad and rejoice in thy mercy: for thou hast considered my trouble: thou hast known my soul in adversities;

8 And hast not shut me up into the hand of the enemy thou hast set my feet in a large room.

Psalm 31:7

"I will be glad and rejoice in thy mercy." For mercy past he is grateful, and for mercy future, which he believingly anticipates, he is joyful. In our most importunate intercessions, we must find breathing time to bless the Lord: praise is never a hindrance to prayer, but rather a lively refreshment therein. It is delightful at intervals to hear the notes of the high-sounding cymbals when the dolorous sackbut rules the hour. Those two words, glad and rejoice, are an instructive reduplication, we need not stint ourselves in our holy triumph; this wine we may drink in bowls without fear of excess. "For thou hast considered my trouble." Thou hast seen it, weighed it, directed it, fixed a bound to it, and in all ways made it a matter of tender consideration. A man's consideration means the full exercise of his mind; what must God's consideration be? "Thou hast known my soul in adversities." God owns his saints when others are ashamed to acknowledge them; he never refuses to know his friends. He thinks not the worse of them for their rags and tatters. He does not misjudge them and cast them off when their faces are lean with sickness, or their hearts heavy with despondency. Moreover, the Lord Jesus knows us in our pangs in a peculiar sense, by having a deep sympathy towards us in them all; when no others can enter into our griefs, from want of understanding them experimentally, Jesus dives into the lowest depths with us, comprehending the direst of our woes, because he has felt the same. Jesus is a physician who knows every case; nothing is new to him. When we are so bewildered as not to know our own state, he knows us altogether. He has known us and will know us: O for grace to know more of him! "Man, know thyself," is a good philosophic precept, but "Man, thou art known of God," is a superlative consolation. Adversities in the plural - "Many are the afflictions of the righteous."

Psalm 31:8

"And hast not shut me up into the hand of the enemy." To be shut up in one's hand is to be delivered over absolutely to his power; now, the believer is not in the hand of death or the devil, much less is he in the power of man. The enemy may get a temporary advantage over us, but we are like men in prison with the door open; God will not let us be shut up, he always provides a way of escape. "Thou hast set my feet in a large room." Blessed be God for liberty: civil liberty is valuable, religious liberty is precious, spiritual liberty is priceless. In all troubles we may praise God if these are left. Many saints have had their greatest enlargements of soul when their affairs have been in the greatest straits. Their souls have been in a large room when their bodies have been lying in Bonner's coalhole, or in some other narrow dungeon. Grace has been equal to every emergency; and more than this, it has made the emergency an opportunity for displaying itself.

I will be glad and rejoice in thy mercy: for thou hast considered my trouble; thou hast known my soul in adversities;

31:7 Known - Loved me, and cared for me.

7. hast known my soul, &c.-had regard to me in trouble.

31:1-8 Faith and prayer must go together, for the prayer of faith is the prevailing prayer. David gave up his soul in a special manner to God. And with the words, ver. 5, our Lord Jesus yielded up his last breath on the cross, and made his soul a free-will offering for sin, laying down his life as a ransom. But David is here as a man in distress and trouble. And his great care is about his soul, his spirit, his better part. Many think that while perplexed about their worldly affairs, and their cares multiply, they may be excused if they neglect their souls; but we are the more concerned to look to our souls, that, though the outward man perish, the inward man may suffer no damage. The redemption of the soul is so precious, that it must have ceased for ever, if Christ had not undertaken it. Having relied on God's mercy, he will be glad and rejoice in it. God looks upon our souls, when we are in trouble, to see whether they are humbled for sin, and made better by the affliction. Every believer will meet with such dangers and deliverances, until he is delivered from death, his last enemy.