Come ye, hear, and I will tell, all you that fear God [Psalm 66:16]. Let us come, let us hear, what he is going to tell, "Come ye, hear, and I will tell." But to whom, "Come ye, and hear"? "All you that fear God." If God ye fear not, I will not tell. It is not possible that it be told to any where the fear of God is not. Let the fear of God open the ears, that there may be something to enter in, and a way whereby may enter in that which I am going to tell. But what is he going to tell? "How great things He has done to my soul." Behold, he would tell: but what is he going to tell? Is it perchance how widely the earth is spread, how much the sky is extended, and how many are the stars, and what are the changes of sun and of moon? This creation fulfills its course: but they have very curiously sought it out, the Creator thereof have not known. [Wisdom 13:1] This thing hear, this thing receive, "O you that fear God, how great things He has done to my soul:" if you will, to yours also.
Source: Exposition on Psalm 66