There is, perhaps, a peculiar tendency to this _one-sided_ religion in this age of excitement and activity; and the young convert, whose Christian character is not matured, is peculiarly liable to fall into this error. The mind becomes absorbed with one object. The more exclusively this object is contemplated, the more its importance is magnified. It becomes, to his mind, the _main thing_. It is identified with his ideas of religion. He makes it a _test of piety_. Then he is prepared to regard and treat all who do not come up to his views on this point as destitute of true religion; though they may exhibit a consistency of character, in other respects, to which he is a stranger. This leads to denunciation, alienation of feeling, bitterness, and strife. But one of God's commands is as dear to him as another; and we cannot excuse ourselves before him, for disobeying one, on the ground that we practise another. The perfection of Christian character consists in the harmonious development of the Christian graces. This is what I understand by the "stature of a perfect man in Christ Jesus;" a man who has no deformity; who is complete in all his members and all his faculties. That you may attain to this, is the sincere prayer of Your affectionate Brother. LETTER XVIII. _Marriage._ "Marriage is honorable in all."--HEB. 13:4. MY DEAR SISTER, Some young persons indulge a fastidiousness of feeling, in relation to the subject of marriage, as though it were indelicate to speak of it. Others make it the principal subject of their thoughts and conversation; yet they seem to think it must never be mentioned but in jest. But both these extremes should be avoided. Marriage is an ordinance of God, and therefore a proper subject of thought and discussion, with reference to personal duty. But it is a matter of great importance, having a direct hearing upon the glory of God, and the happiness of individuals. It should, therefore, never be approached with levity. But, as it requires no more attention than what is necessary in order to understand present duty, it would be foolish to make it a subject of constant thought, and silly to make it a common topic of conversation. It is a matter which should be weighed deliberately and seriously by every young person. In reference to the main subject, two things should be considered: