But while the distinction between the life we naturally seek and that to which God calls us is felt by all from age to age, the forms in which this distinction makes itself felt vary as the world grows older. To all men living in a world of sense it is difficult to live by faith in the unseen. To every man it is the ultimate, severest test of character to determine for what ends he will live and to carry out this determination; but the temptations which avail to draw men aside from their reasonable decision are various as the men themselves. Paul names the temptations to which the Corinthians, in common with the Israelites, were exposed: idolatry, fornication, murmuring, tempting Christ. He saw clearly how difficult it was for the Corinthians to discard all heathen customs, how much of what had been brightest in their life they must sacrifice if they were to renounce absolutely the religion of their parents and friends and all the joyous, if licentious, customs associated with that religion. Apparently some of them thought they might pass from the Christian communion to the heathen temple, and after partaking of Christ's sacrament eat and drink in the idolatrous festival, entering into the entire service. They seemed to think that they might be both Christians and pagans. Against this vain attempt to combine the incompatible Paul warns them. Do not tempt Christ, he says, by experimenting how far He will bear with your conformity to idolatry. Some of the Israelites did so, and were destroyed by serpents. Do not murmur that you are hereby severed from all the enjoyments of life, dissociated from your heathen friends, blackballed in society and in business, excluded from all national festivals and from many private entertainments; do not count up your losses, but your gains. Your temptations are severe, but "there hath no temptation taken you but such as is common to man." Every man must make up his mind to a certain kind of life and go through with it. No man can unite in his own life all advantages. He must deliberate and choose; and having made his choice, he must not lament what he loses or be tempted from striving to gain what he judges best by weakly and greedily craving for the second-best also. He may win the first prize; he may win the second: he cannot win both, and if he tries, he will win neither.