That evening as he sat eating with the Twelve, he said, “One of you will betray me.” Sorrow chilled their hearts, and each one asked, “Am I the one?” He replied, “It is the one I served first. For I must die just as was prophesied, but woe to the man by whom I am betrayed. Far better for that one if he had never been born.” Judas, too, had asked him, “Rabbi, am I the one?” And Jesus had told him, “Yes.” Matthew 26:20-25
Do not say. “I know when to stop.” Do not say, “I can go so far; it will not do me any harm.” Many a man has said that and been ruined by it. Do not say, “It is natural to me to have these inclinations and tastes, and there can be no harm in yielding to them.” It is perfectly natural for a man to stoop down over the edge of a precipice to gather the flowers that are growing in some cranny in the cliff, and it is as natural for him to topple over, and be smashed to a mummy at the bottom! God gave you your dispositions and your whole nature under lock and key; keep them so!