13 Now I come to your Temple with burnt offerings to fulfill the vows I made to you- 14 yes, the sacred vows that I made when I was in deep trouble. 15 That is why I am sacrificing burnt offerings to you- the best of my rams as a pleasing aroma, and a sacrifice of bulls and male goats. Interlude 16 Come and listen, all you who fear God, and I will tell you what he did for me. 17 For I cried out to him for help, praising him as I spoke. 18 If I had not confessed the sin in my heart, the Lord would not have listened. 19 But God did listen! He paid attention to my prayer. 20 Praise God, who did not ignore my prayer or withdraw his unfailing love from me.

Matthew Henry's Commentary on Psalm 66:13-20

Commentary on Psalm 66:13-20

(Read Psalm 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.