But thou, O Lord, art a God full of compassion ... - See the notes at Psalm 86:5. The words rendered "long-suffering" mean that there was and would be delay in his anger; that it was not soon excited; that he did not act from passion or sudden resentment; that he endured the conduct of sinners long without rising up to punish them; that he was not quick to take vengeance, but bore with them patiently. On this account the psalmist, though conscious that he was a sinner, hoped and pleaded that God would save him.

Plenteous in ... truth - That is, in faithfulness. When thou hast made a promise, thou wilt faithfully keep it.

But thou, O Lord - What a wonderful character of God is given in this verse! אדני Adonai, the Director, Judge, and Support; - but instead of אדני Adonai, thirty-four of Kennicott's MSS. have יהוה Jehovah, the self-existent and eternal Being; - אל El, the strong God; רחום rachum, tenderly compassionate; חנון channun, the Dispenser of grace or favor; ארך אפים erech appayim, suffering long, not easily provoked; רב חמד rab chesed, abundant in blessings; and אמת emeth, faithful and true. Such is the God who has made himself more particularly known to us in Christ. The scanty language of our ancestors was not adequate to a full rendering of the original words: "And thu driht God gemildsiend, and mildheort, gethyldig and mucel mildheortnysse and sothfaest - And thou, Lord God, art mild, and mildhearted, patient, and of much mildheartedness, and soothfast," - steady in truth.

In the old Psalter the language is but little improved: And thou Lorde God mercier, and mercyful, sufferand, and of mykel mercy, and sothefast.

The word mercier is interpreted, do and dede of mercy.

But thou, O Lord, art a God full of compassion,.... Or merciful (t), in the most affectionate and tender manner, as a parent to its child, or particularly as a mother to the son of her womb; and is rich and plenteous in his mercy, and freely bestows it; and this was the support of the psalmist under his troubles from his enemies, that though they were cruel the Lord was merciful:

and gracious; so he has been in eternity, as appears by his election of grace, by the covenant of his grace, and the provisions of it in his Son; and so he is in time, as is manifest from his kindness in Christ Jesus, from his justification, pardon, adoption, effectual calling and salvation of his people, which are all of grace;

longsuffering; not only to wicked men, but to his chosen ones; which longsuffering of his is salvation to them; he bears with them, and waits to be gracious to them, to bring them to repentance, and save them, 2 Peter 3:9,

plenteous in mercy; or goodness; See Gill on Psalm 86:5, and truth: in fulfilling promises; see Exodus 34:6, to which these words refer.

(t) "misericors", Pagninus, Montanus, Junius & Tremellius, Piscator, &c.

But thou, O Lord, art a God full of compassion, and gracious, longsuffering, and plenteous in mercy and truth.

15. Contrasts God with his enemies (compare Ps 86:5).

86:8-17 Our God alone possesses almighty power and infinite love. Christ is the way and the truth. And the believing soul will be more desirous to be taught the way and the truth. And the believing soul will be more desirous to be taught the way and the truth of God, in order to walk therein, than to be delivered out of earthly distress. Those who set not the Lord before them, seek after believers' souls; but the compassion, mercy, and truth of God, will be their refuge and consolation. And those whose parents were the servants of the Lord, may urge this as a plea why he should hear and help them. In considering David's experience, and that of the believer, we must not lose sight of Him, who though he was rich, for our sakes became poor, that we through his poverty might be rich.