Psalms 26:4-5: I have not sat with vain persons, neither will I go in with dissemblers. 5: I have hated the congregation of evil doers; and will not sit with the wicked.
Galatians 5:21: Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that they which do such things shall not inherit the kingdom of God. (This does NOT mean that Christians who do these things will not go to Heaven, it means that when they do go to Heaven they shall not have any rewards for serving Christ.)
Ephesians 5:3-12: But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints; 4: Neither filthiness, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks. 5: For this ye know, that no whoremonger, nor unclean person, nor covetous man, who is an idolater, hath any inheritance in the kingdom of Christ and of God. 6: Let no man deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience. 7: Be not ye therefore partakers with them. 8: For ye were sometimes darkness, but now are ye light in the Lord: walk as children of light: 9: (For the fruit of the Spirit is in all goodness and righteousness and truth;) 10: Proving what is acceptable unto the Lord. 11: And have no fellowship with the unfruitful works of darkness, but rather reprove them. 12: For it is a shame even to speak of those things which are done of them in secret.
Philippians 3:17-19: Brethren, be followers together of me, and mark them which walk so as ye have us for an ensample. 18: (For many walk, of whom I have told you often, and now tell you even weeping, that they are the enemies of the cross of Christ: 19: Whose end is destruction, whose God is their belly, and whose glory is in their shame, who mind earthly things.)
II Thessalonians 3:6: Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.
II Thessalonians 3:14: And if any man obey not our word by this epistle, note that man, and have no company with him, that he may be ashamed.
1 John 2:15 Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him. 16: For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world. 17: And the world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever.