What does Ezra 9:5 mean?

For they have taken of their daughters for themselves and for their sons, so that the holy offspring have mixed themselves with the peoples of the lands. Yes, the hand of the princes and rulers has been chief in this trespass.”

When I heard this thing, I tore my garment and my robe, and pulled the hair out of my head and of my beard, and sat down confounded.

Then everyone who trembled at the words of the God of Israel were assembled to me, because of their trespass of the captivity; and I sat confounded until the evening offering.

and I said, “My God, I am ashamed and blush to lift up my face to you, my God; for our iniquities have increased over our head, and our guiltiness has grown up to the heavens.

Since the days of our fathers we have been exceeding guilty to this day; and for our iniquities we, our kings, and our priests, have been delivered into the hand of the kings of the lands, to the sword, to captivity, to plunder, and to confusion of face, as it is this day.

Now for a little moment grace has been shown from Yahweh our God, to leave us a remnant to escape, and to give us a nail in his holy place, that our God may lighten our eyes, and revived us a little in our bondage.