Satan is now more earnestly engaged in playing the game of life for souls than at any previous time; and unless we are constantly on our guard, he will establish in our hearts, pride, love of self, love of the world, and many other evil traits. He will also use every possible device to unsettle our faith in God and in the truths of His Word. If we have not a deep experience in the things of God, if we have not a thorough knowledge of His Word, we shall be beguiled to our ruin by the errors and sophistries of the enemy. False doctrines will sap the foundations of many, because they have not learned to discern truth from error. Our only safeguard against the wiles of Satan is to study the Scriptures diligently, to have an intelligent understanding of the reasons of our faith, and faithfully to perform every known duty. The indulgence of one known sin will cause weakness and darkness, and subject us to fierce temptation.... (Mar 95.3) MC VC