5 “He shall show His people the power of His works”. Let not the holy Israelites, who have left all their possessions and have followed Him, be saddened; let them not be sorrowful and say, “Who then can be saved?” For “it is easier for a camel to go through the eye of a needle, than for a rich man to enter into the kingdom of God.” For “with men these things are impossible, but with God all things are possible.” “That He may give them the heritage of the heathen.” For they went to the heathen, and enjoined the rich of this world “not to be high-minded, nor to trust in uncertain riches, but in the living God,” to whom that is easy which is difficult for men. For thus many were called, thus the heritage of the heathen has been occupied, thus it has happened, that even many who have not abandoned all their possessions in this life in order to follow Him, have despised even life itself for the sake of confessing His Name; and like camels humbling themselves to bear the burden of troubles, have entered as it were through a needle's eye, through the piercing straits of suffering. He has wrought these effects, unto whom all things are possible.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)