Had not thy law been my delight The prophet continues to prosecute almost the same theme; affirming, that he would have been undone, had he not in his calamities sought consolation from the law of God. The adverb, 'z az, signifies then; but as it is sometimes used for a long time, it is equivalent here to long ago; unless some may prefer to consider it as a significant and emphatic pointing to the thing, as if he were still in the state which he describes. He confirms from his own experience what he had previously said, to make it manifest that he did not speak of things with which he was unacquainted, but that he asserts what he had really experienced, -- namely, that there is no other solace, and no other remedy for adversity, but our reposing upon the word of God, and our embracing the grace and the assurance of our salvation which are offered in it. He here unquestionably commends the very same word, which he had but now said dwelt in heaven. Though it resound on earth, enter into our ears, and settle in our hearts, yet it still retains its celestial nature; for it descends to us in such a manner, as that it is not subject to the changes of the world. The prophet declares that he was grievously oppressed by a weight of afflictions enough to overwhelm him; but that the consolation which he derived from the Divine Law in such desperate circumstances, was as life to him.

Unless thy law had been my delights - See Psalm 119:16, note; Psalm 119:24, note. Unless I had had pleasure in thy law, thy word, thy truth; unless I had derived support and consolation in that.
I should then have perished in mine affliction - I should have sunk under my burden. I should not have been able to hold up under the weight of sorrow and trial. How often the people of God can say. this! How often may each one in the course of his life say this! "I should have sunk a thousand times," said a most excellent, but much afflicted, man to me, "if it had not been for one declaration in the word of God - 'The Eternal God is thy refuge, and underneath are the everlasting arms.'"

Unless thy law had been my delights - Had we not had the consolations of religion, we should long ago have died of a broken heart.

Unless thy law had been my delights,.... Not the law of works, the voice of words, which they that heard entreated they might hear no more; which is terrible, and works wrath in the conscience; is a cursing and damning law to the transgressors of it; and so not delightful, unless as considered in the hands of Christ, the fulfilling end of it: but the law of faith, the doctrine of faith, or of justification by the righteousness of Christ, received by faith, which yields peace, joy, and comfort, even in tribulation: or the whole doctrine of the Gospel, the law of the Messiah, the isles waited for; the doctrine of peace, pardon, righteousness, and eternal life by Christ, which is exceeding delightful to sensible sinners;
I should then have perished in mine affliction; referring to some particular time of affliction he was pressed with, either through the persecution of Saul, or the conspiracy of Absalom which was very great and heavy upon him, so that he almost despaired of deliverance from it; and must have perished, not eternally, but as to his comforts: his heart would have fainted in him, and he would have sunk under the weight of the affliction, had it not been for the relief he had from the word of God, the doctrines and promises of it; he was like one in a storm, tossed with tempests, one wave after another beat upon him, and rolled over him, when he thought himself just perishing; and must have given all over for lost, had it not been for the delight and pleasure he found in reading and meditating on the sacred writings.

Hence the pious are encouraged and inclined to seek a knowledge of it, and persevere amidst the efforts of those planning and waiting to destroy them.
my delights--plural, not merely delight, but equal to all other delights.