Ps 85:11

“"Lead me, O Lord, in Your way, and I will walk in Your truth" [Psalm 86:11]. Your way, Your truth, Your life, is Christ. Therefore belongs the Body to Him, and the Body is of Him. I am the Way, and the Truth, and the Life. [John 14:6] "Lead me, O Lord, in Your way." In what way? "And I will walk in Your truth." It is one thing to lead to the way, another to guide in the way. Behold man everywhere poor, everywhere in need of help. Those who are beside the way are not Christians, or not yet Catholics: let them be guided to the way: but when they have been brought to the way and made Catholics in Christ, they must be guided by Him in the way itself, lest they fall. Now assuredly they walk in the way. "Lead me, O Lord, in Your way:" surely I am now in Your way, lead me there. "And I will walk in Your truth:" while You lead I shall not err: if Thou let me go, I shall err. Pray then that He let you not go, but lead you even to the end. How does He lead you? By always admonishing, always giving you His hand. And the arm of the Lord, to whom is it revealed? [Isaiah 53:1] For in giving His Christ He gives His hand: in giving His hand, He gives His Christ. He leads to the way, in leading to His Christ: He leads in the way, by leading in His Christ, and Christ is truth. "Lead me," therefore, "O Lord, in Your way, and I will walk in Your truth:" in Him verily who said, "I am the Way, and the Truth, and the Life." [John 14:6] For Thou who leadest in the way and the truth, whither leadest Thou, but unto life? In Him then, unto Him You lead.”

“Lead me, O Lord, in Your way, and I shall walk in Your truth; let my heart rejoice, that it may fear Your name. In praying this prayer, we are illuminated to know the stages of the divine ascent. For since, according to the state of our condition, the universe of things is itself a ladder for ascending into God, and among things some are vestiges, some are images, some are corporeal, some spiritual, some temporal, some aeviternal, and accordingly some are outside us, some within us: in order that we may arrive at the consideration of the First Principle, which is most spiritual and eternal and above us, we must pass through the vestige, which is corporeal and temporal and outside us, and this is to be led in the way of God: we must enter into our own mind, which is the image of God, aeviternal, spiritual and within us, and this is to walk in the truth of God: we must transcend to the eternal, most spiritual, and above us, looking toward the First Principle, and this is to rejoice in the knowledge of God and in the reverence of His majesty.”