Verse 19. - But verily God hath heard me. The psalmist's prayer had been answered so unmistakably, so directly, that he could not doubt of the result, which had been brought about, being the consequence of his vows and supplications (vers. 13. 14). He hath attended to the voice of my prayer. Strange as it might seem to be that God had attended to the voice of a man (Job 7:17; Psalm 8:4; Psalm 144:3; James 5:14-18), yet so it was; the psalmist did not and could not doubt it.

66:13-20 We should declare unto those that fear God, what he has done for our souls, and how he has heard and answered our prayers, inviting them to join us in prayer and praise; this will turn to our mutual comfort, and to the glory of God. We cannot share these spiritual privileges, if we retain the love of sin in our hearts, though we refrain from the gross practice, Sin, regarded in the heart, will spoil the comfort and success of prayer; for the sacrifice of the wicked is an abomination of the Lord. But if the feeling of sin in the heart causes desires to be rid of it; if it be the presence of one urging a demand we know we must not, cannot comply with, this is an argument of sincerity. And when we pray in simplicity and godly sincerity, our prayers will be answered. This will excite gratitude to Him who hath not turned away our prayer nor his mercy from us. It was not prayer that fetched the deliverance, but his mercy that sent it. That is the foundation of our hopes, the fountain of our comforts; and ought to be the matter of our praises.But verily God hath heard me,.... So that it was a plain case that he had not regarded iniquity in his heart; had not lived a vicious course of life, nor was an hypocrite; otherwise God would not have heard his prayer; whereas he had, and which is confirmed in the following clause;

he hath attended to the voice of my prayer; which is an instance of the grace and condescension of God, and showed in what high favour the psalmist was with the Lord, and what regard he had unto him; and therefore could not be the man his enemies represented him to be.