"And John answered him, saying, Master, we saw one casting out devils in thy name, and he followeth not us: and we forbad him, because he followeth not us. But Jesus said, Forbid him not: for there is no man which shall do a miracle in my name, that can lightly speak evil of me; for he that is not against us is on our part: For whosoever shall give you a cup of water to drink in my name, because ye belong to Christ, verily I say unto you, he shall not lose his reward." -Mark 9:38-41
"And now, I, Mormon, speak unto you, my beloved brethren; and it is by the grace of God, the Father, and our Lord Jesus Christ, and his holy will, because of the gift of his calling unto me, that I am permitted to speak unto you at this time; wherefore, I would speak unto you that are of the church, that are the peaceable followers of Christ, and that have obtained a sufficient hope, by which ye can enter into the rest of the Lord from this time henceforth until ye shall rest with him in heaven. And now, my brethren, I judge these things of you because of your peaceable walk with the children of men; for I remember the Word of God which saith: By their works ye shall know them; for if their works be good, then they are good also. For behold, God hath said: A man, being evil, cannot do that which is good; for if he offereth a gift or prayeth unto God, except he shall do it with real intent, it profiteth him nothing. For behold, it is not counted unto him for righteousness. For behold, if a man, being evil, giveth a gift, he doeth it grudgingly; wherefore, it is counted unto him the same as if he had retained the gift; wherefore, he is counted evil before God. And, likewise, also is it counted evil unto a man if he shall pray and not with real intent of heart; yea, and it profiteth him nothing, for God receiveth none such; wherefore, a man, being evil, cannot do that which is good; neither will he give a good gift: For behold, a bitter fountain cannot bring forth good water; neither can a good fountain bring forth bitter water; wherefore, a man being a servant of the devil cannot follow Christ; and if he follow Christ, he cannot be a servant of the devil. Wherefore, all things which are good cometh of God; and that which is evil cometh of the devil; for the devil is an enemy unto God, and fighteth against him continually, and inviteth and enticeth to sin and to do that which is evil continually. But behold, that which is of God inviteth and enticeth to do good continually; wherefore, everything which inviteth and enticeth to do good, and to love God, and to serve him is inspired of God. Wherefore, take heed, my beloved brethren, that ye do not judge that which is evil to be of God or that which is good and of God to be of the devil. For behold, my brethren, it is given unto you to judge, that ye may know good from evil; and the way to judge is as plain, that ye may know with a perfect knowledge, as the daylight is from the dark night: For behold, the Spirit of Christ is given to every man, that they may know good from evil; wherefore, I show unto you the way to judge: For everything which inviteth to do good and to persuade to believe in Christ is sent forth by the power and gift of Christ; wherefore, ye may know with a perfect knowledge, it is of God; but whatsoever thing persuadeth men to do evil, and believe not in Christ, and deny him, and serve not God, then ye may know with a perfect knowledge, it is of the devil. For after this manner doth the devil work: For he persuadeth no man to do good, no not one; neither doth his angels; neither do they who subject themselves unto him. And now, my brethren, seeing that ye know the light by which ye may judge, which light is the light of Christ, see that ye do not judge wrongfully; for with that same judgment which ye judge, ye shall also be judged. Wherefore, I beseech of you, brethren, that ye should search diligently in the light of Christ, that ye may know good from evil; if ye will lay hold upon every good thing and condemn it not, ye certainly will be a child of Christ. And now, my brethren, how is it possible that ye can lay hold upon every good thing? And now, I come to that faith of which I said I would speak; and I will tell you the way whereby ye may lay hold on every good thing: For behold, God knowing all things, being from everlasting to everlasting; behold, he sent angels to minister unto the children of men, to make manifest concerning the coming of Christ; and in Christ there should come every good thing." -Moroni 7:2-21 RAV. :2-22 OPV