If we consider, in the first place, David's Lord as the preacher here, these verses will be very blessed to our view. How was Christ exercised in the days of his flesh, when he had offered up prayers and supplications, with strong crying and tears, onto him that was able to save him from death, and was heard in that he feared? Hebrews 5:7. And who so eminently as Christ could adopt this language? Who but Jesus could say, that iniquity had not been regarded in his heart? Of whom but Christ could it be said, the Lord hath heard, because there was no iniquity in him? And if we read the passage as referring to the church, or any individual of the church, we can only make application of it as considered in Jesus. Reader, can you invite the people that fear God, to come and hear what the Lord hath done for your soul? Can you tell them of Jesus, of his grace, his mercy, his love, his salvation, and your interest in him? If so, you will be able to close the Psalm in the same words as David. The Lord is indeed blessed when our prayers do not turn back unheard and unanswered; and when Jesus, the firstborn in the womb of mercy, nay, the whole sum and substance of mercy, even mercy itself, is looking upon us.
Related Commentaries of Psalms 66:16
Psalms 66:16-20
16 Come and hear, all ye that fear God, and I will declare what he hath done for my soul.
17 I cried unto him with my mouth, and he was extolled with my tongue.
18 If I regard iniquity in my heart, the Lord will not hear me:
19 But verily God hath heard me; he hath attended to the voice of my prayer.
20 Blessed be God, which hath not turned away my prayer, nor his mercy from me.