8 “His eyes look upon the poor.” His to Whom the poor man has been left, and Who has been made a refuge to the poor. And therefore all the seditions and tumults within these nets, until they be drawn to shore, concerning which heretics upbraid us to their own ruin and our correction, are caused by those men, who will not be Christ's poor. But do they turn away God's eyes from such as would be so? “For His eyes look upon the poor.” Is it to be feared lest, in the crowd of the rich, He may not be able to see the few poor, whom He brings up in safe keeping in the bosom of the Catholic Church?
“His eyelids question the sons of men.” Here by that rule I would wish to take “the sons of men” of those that from old men have been regenerated by faith. For these, by certain obscure passages of Scripture, as it were the closed eyes of God, are exercised that they may seek: and again, by certain clear passages, as it were the open eyes of God, are enlightened that they may rejoice. And this frequent closing and opening in the holy Books are as it were the eyelids of God; which question, that is, which try the “sons of men;” who are neither wearied with the obscurity of the matter, but exercised; nor puffed up by knowledge, but confirmed.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)