3. It is easy to see that this principle of nonconformity to the world is in constant requisition. There is abundant scope for it. The opinions of men and the known will of God are often in competition; it ought never to be a matter of doubt as to which we prefer. We are often exposed to allurement into scenes which are notoriously unfavourable to the development of the spiritual life; there ought not to be even a momentary uncertainty as to our willingness to resist the allurement--not merely for our own sake, but for the sake of Him whose "mercies" we enjoy, whose we are, and whom we profess to serve. There should never be any room for the question as to whether we are on the side of right or wrong, holiness or sin, spirituality or carnality, conscience or convenience, charity or harshness, faith or unbelief. Thus we see that, whilst in one aspect of it Christianity is broad, in another it is narrow. "Strait is the gate, and narrow is the way, that leadeth unto life." These are the words of the Divine Author of our faith. This is the chief ground of dislike which men of the world have to the practical claims of the gospel. Say with Paul that everything we do must be done to the glory of God; say with Christ that sin is in our secret thoughts as well as in our acts, and then the complaint of "strictness" is instantly heard. Yet is it not evident that an inward holiness is the only thing that can be taught, and that without inward holiness there is no real holiness at all? The truth is that men secretly want concessions to be made in favour of their favourite sins--one for his ambition, another for his unlawful or questionable attachments, another for his covetousness, another for his liberty to be dishonest in trade or insincere in society, another--where shall we stop? Concessions? Men may make concessions in these directions in the name of Christianity; but Christianity itself disowns them. "What fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? and what concord hath Christ with Belial? or what part hath he that believeth with an infidel? and what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. Wherefore come out from among them, and be ye separate, and touch not the unclean thing; and I will receive you, and will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty."