Musar su Salmi 25:5

The fourth thought concerning the entrusting of the heart in the care of God occurs where a man concentrates his heart through fasting, prayer and all the rest of the conmmandments and is thus restrained from sin. It is necessary that he go forward with all his might to fulfill the commandments, and he must pray with a faithful heart and pure thought and with firm intent to glorify His Great Name. And in doing this we are obligated to trust Him and to plead with Him to help us and to teach us the straight paths as David, peace upon him, said : "Guide me in thy truth and teach me" (Ps. 25:5). And he said : "Make me tread in the paths of thy commandments" (Ibid. 119:35), and again, "I have chosen the way of faithfulness" (Ibid. : 30). And all this is proof that he chose the Service of God and prayed for two things; first, to strengthen his heart in his concentration on God so that he might separate from his heart the trouble and concern over this world. And the second thing for which he prayed was to strengthen his body and limbs so that he might be strong in his good deeds. And this is what he meant when he prayed that God should prosper him in his body and in the concentration of his heart to God.

Having finished numbering the parts of the book and its chapters, let us now begin to explain it all, with the help of God, exalted may He be. We pray that He lead us in the paths of rectitude, and by His grace bring us near unto the ways of uprightness. Thus His Saint besought Him (Ps. xxv. 5), "Lead me in Thy truth."