17. See those inner things commended to us in the psalm: “But the sons of men will put their trust in the covering of Thy wings.” See what it is to enter within; see what it is to flee for refuge to His protection; see what it is to run even under the Father’s lash, for He scourgeth every son whom He receiveth. “But the sons of men shall put their trust under the cover of Thy wings.” What is within? “They shall be filled with the plenteousness of Thy house,” when Thou shalt have sent them within, entering into the joy of their Lord; “they shall be filled with the plenteousness of Thy house; and Thou shalt give them to drink of the stream of Thy pleasure. For with Thee is the fountain of life.” Not away without Thee, but within with Thee, is the fountain of life. “And in Thy light we shall see light. Show Thy mercy upon them that know Thee, and Thy righteousness to them that are of upright heart.” They who follow the will of their Lord, not seeking their own, but the things of the Lord Jesus Christ, they are the upright in heart, their feet shall not be moved. For “God is good to Israel, to the upright in heart. But, as for me, says he, my feet were almost moved.” Why? “Because I was jealous at sinners, looking at the peace of sinners.” To whom is God good then, unless to the upright in heart? For God was displeasing to me when my heart was crooked. Why displeasing? Because He gave happiness to the wicked, and therefore my feet tottered, as if I had served God in vain. For this reason, then, my feet were almost moved, because I was not upright of heart. What then is upright in heart? Following the will of God. One man is prosperous, another man toils; the one lives wickedly and yet is prosperous, the other lives rightly and is distressed. Let not him that lives rightly and is in distress be angry; he has within what the prosperous man has not: let him therefore not be saddened, nor vex himself, nor faint. That prosperous man has gold in his own chest; this other has God in his conscience. Compare now gold and God, chest and conscience. The former has that which perishes, and has it where it will perish; the latter has God, who cannot perish, and has Him there whence He cannot be taken away: only if he is upright in heart; for then He enters within and goeth not out. For that reason, what said he? “For with Thee is the fountain of life:”