797. The Habit of Faith.--Faith is not only an act that passes, but it is also a permanent quality or habit conferred by God, one of the “most great and perfect promises” which man must make use of (II Peter, i. 3 sqq.), a charism that is not for a time but for all this life, just like hope and charity (I Cor., xiii. 13). God, who does all things sweetly (Wis., viii. 1), and who has provided for His natural creatures internal powers by which they incline and move themselves towards the ends of their activities, has not done less for those whom He moves to a supernatural destiny; and, in justifying the sinner, He infuses along with grace the supernatural virtues of faith, hope and charity (Council of Trent, Sess. VI, Cap. 6). 798. The virtue of faith is thus defined by the Council of the Vatican: “Faith is a supernatural virtue, by which, with the help of God’s grace, we believe the truths revealed by Him, not on account of an intrinsic evidence of the truths themselves, perceived by natural reason, but on account of the authority of God who revealed them.” 799. Hence, the virtue of faith has the following properties: (a) It is supernatural, not only because its object and motive are supernatural, but because it proceeds from a supernatural principle, i.e., grace (John, vi, 29; Eph., ii. 8). (b) It is obscure, because the believer assents to that which has no intrinsic evidence for him. He does not see its truth as the blessed see God, for “we see now through a glass in a dark manner, but then face to face” (I Cor., xiii. 12). He does not know its truth as he knows evident or naturally demonstrated propositions, for faith is about truths that surpass reason--things “that appear not.” This, of course, does not mean that faith is not rightly called a new light added to the mind, and that the motives which call for the acceptance of faith are not evidently credible. (c) It is free, because, although one cannot dissent from that which is evident intrinsically (e.g., that two and two make four), one is able to dissent from that which is obscure. (d) It is not a process of reasoning, but a simple act of assent, in which one accepts at the same time the authority of the Revealer and the truth of His revelation. “Jesus said to her (Martha): I am the resurrection and the life .... Believest thou this? She saith to Him: Yea, Lord, I have believed that Thou art the Christ, etc.” (John, xi. 25-27). (e) It is firm and unshaken in a far higher degree than the assent of understanding and science, since it rests on the infallible authority of God (I Thess., ii. 13). 800. Before justification, faith exists, it seems, only as an act performed under the influence of actual or transitory grace. After the infusion of habitual grace, faith is a habit or infused virtue. But there are two modes of existence characteristic of this one habit, and hence the distinction of living and dead faith (Gal., v. 6; James, ii. 26).