Ps 50:11

“"Cast me not forth from Thy face" (ver. 11). Turn away Thy face from my sins: and "cast me not forth from Thy face." Whose face he feareth, upon the face of the Same he calleth. "And Thy Holy Spirit take not away from me." For in one confessing there is the Holy Spirit. Even now, to the gift of the Holy Spirit it belongeth, that what thou hast done displeaseth thee. The unclean spirit sins do please; the Holy One they displease. Though then thou still implore pardon, yet thou art joined to God on the other part, because the evil thing that thou hast committed displeaseth thee: for the same thing displeaseth both thee and Him. Now, to assail thy fever, ye are two, thou and the Physician. For the reason that there cannot be confession of sin and punishment of sin in a man of himself: when one is angry with himself, and is displeasing to himself, then it is not without the gift of the Holy Spirit, nor doth he say, Thy Holy Spirit give to me, but, "Take not away from me."”

“"Do not cast me from your face, and do not take your Holy Spirit from me." Here he asks for the restoration of grace. And first, he asks for grace itself. Second, he asks for the effect of grace, at "restore." A person is said to have the grace of God in two ways: for someone is said to have the grace of God and of man; and as to something, similarly, namely when he is pleasing to both, namely to God and to man. And this is called sanctifying grace. Eph. 1: "In which he has made us acceptable in his beloved Son." And accordingly, grace is called the benevolence of God, by which God loves a person unto eternal life. And as to something, it is dissimilar: for the grace of man does not make him good, but from his own goodness he becomes pleasing to man; but with God it is the reverse, because from the benevolence of God it follows that a person becomes good. There are therefore two things in the grace of God: namely, the benevolence itself and its effect in the soul; and he asks for both when he says, "Do not cast me away," etc. And this can be understood in two ways. He who is in the face of someone is seen by him and can see him. This person is said to be in the face of God, according to 1 Kgs. 17: "As the Lord lives, in whose holy sight I stand." Gen. 48: "The God in whose sight my fathers walked." And this, because they themselves are upright for seeing God. Ps. 26: "One thing I have asked of the Lord," etc. Through sin, both are lost, because sinners desert God, are deserted by God, and lose the confidence of trusting in God. Is. 59: "Your sins and iniquities have divided between you and your God," etc., as to the first; "and your sins have hidden his face from you," as to the second. This person, therefore, is cast from the face of God through sin; and therefore he asks that he not be finally cast away in either way. Also note that in a person there are two things: namely, guilt, from which he is worthy of punishment, and nature, from which he has a fitness for grace; and therefore he asks that God not look upon the guilt but upon the nature; and therefore he says, "Do not cast me away." Also, the gift of grace is given through charity; and such a gift is given through the Holy Spirit; and therefore he says, "and do not take your Holy Spirit from me," whose temple I had been, but I lost it because of sin. Wis. 1: "The Holy Spirit of discipline will flee from the deceitful." Therefore, "do not take away," namely finally.”