8. The missionary, in the exercise of a wise discretion as to time, place, manner and amount of instruction, is decidedly to discountenance indulgence in known sin and the neglect of known duty, and so to instruct his hearers that they may understand all Christian duty. With that wisdom which is profitable to direct, he is to exhibit the legitimate bearing of the gospel upon every moral evil, in order to its removal in the most desirable way; and upon slavery, as upon other moral evils. As a missionary, he has nothing to do with political questions and agitations. He is to deal alone, and as a Christian instructor and pastor, with what is morally wrong, that the people of God may separate themselves therefrom, and a right standard of moral action be held up before the world. 9. While, as in war, there can be no shedding of blood without sin somewhere attached, and yet the individual soldier may not be guilty of it; so, while slavery is always sinful, we cannot esteem every one who is legally a slaveholder a wrong-doer for sustaining the legal relation. When it is made unavoidable by the laws of the State, the obligations of guardianship, or the demands of humanity, it is not to be deemed an offence against the rule of Christian right. Yet missionaries are carefully to guard, and in the proper way to warn others to guard, against unduly extending this plea of necessity or the good of the slave, against making it a cover for the love and practice of slavery, or a pretence for not using efforts that are lawful and practicable to extinguish this evil. 10. Missionaries are to enjoin upon all masters and servants obedience to the directions specially addressed to them in the Holy Scriptures, and to explain and illustrate the precepts containing them. 11. In the exercise of discipline in the churches, under the same obligations and limitations as in regard to other acts of wrong-doing, and which are recognized in the action of ministers with reference to other matters in evangelical churches where slavery does not exist, missionaries are to set their faces against all overt acts in relation to this subject, which are manifestly unchristian and sinful; such as the treatment of slaves with inhumanity and oppression; keeping from them the knowledge of God's holy will; disregarding the sanctity of the marriage relation; trifling with the affections of parents, and setting at naught the claims of children on their natural protectors; and regarding and treating human beings as articles of merchandise.