See II Cor. 6:14; Heb. 3:12; Acts 14:2; II Peter 2 :1, 2; also Ch. 313, 17. It is not intended, however, that the believer should hold no communication with those who are still in the darkness of unbelief, otherwise he would not be fulfilling the divine command to spread the Gospel, and, "show forth Christ," at all seasons. He should, however, avoid all such associations and relationships—business, social and otherwise—as would bring a discordant element into his own home or business life, and thus antagonize spiritual growth. To put such people on the level of home acquaintances and intimate friends, would be very likely to prove spiritually disastrous to some member of your household.