There is a double tendency in every voluntary determination, one to propagate itself, the other to weaken or support, according to its own moral quality, the general principle of virtue. Every sin, therefore, imparts a proclivity to other acts of the same sort, and disturbs and deranges, at the same time, the whole moral constitution, it tends to the formation of special habits, and to the superinducing of a general debility of principle, which lays a man open to defeat from every species of temptation. The extent to which a single act shall produce this double effect, depends upon its intensity, its intensity depends upon the fullness and energy of will which will enter into it, and the energy of will depends upon the strength of the motives resisted. An act, therefore, which concludes an earnest and protracted conflict, which has not been reached without a stormy debate in the soul, which marks the victory of evil over the love of character, sensibility to shame, the authority of conscience and the fear of God, an act of this sort concentrates in itself the essence of all the single determinations which preceded it, and possesses power to generate a habit and to derange the constitution, equal to that which the whole series of resistances to duty, considered as so many individual instances of transgression, is fitted to impart. By one such act a man is impelled with an amazing momentum in the path of evil. He lives years of sin in a day or an hour. It is always a solemn crisis when the first step is to be taken in a career of guilt, against which nature and education, or any other strong influences protest. The results are unspeakably perilous when a man has to fight his way into crime. The victory creates an epoch in his life. He is from that hour, without a miracle of grace, a lost man. The earth is strewed with wrecks of character which were occasioned by one fatal determination at a critical point in life, when the will stood face to face with duty, and had to make its decision deliberately and intensely for evil. [Footnote 13: A Presbyterian divine, and professor of Theology, in South Carolina, his native state: a distinguished theological writer of the South.] * * * * * =_Charles P. McIlvaine,[14] 1799-1873._= From a Sermon on the Resurrection of Christ. =_37._=. ATTESTATIONS OF THE RESURRECTION.