My sister, dare you disregard these plain and positive directions? As a child of God, a subject of Christ’s kingdom, the purchase of His blood, how can you connect yourself with one who does not acknowledge His claims, who is not controlled by His Spirit? The commands I have quoted are not the word of man, but of God. Though the companion of your choice were in all other respects worthy (which he is not), yet he has not accepted the truth for this time; he is an unbeliever, and you are forbidden of heaven to unite yourself with him. You cannot, without peril to your soul, disregard this divine injunction. (5T 364.1) MC VC

I would warn you of your danger before it shall be too late. You listen to smooth, pleasant words and are led to believe that all will be well; but you do not read the motives that prompt these fair speeches. You cannot see the depths of wickedness hidden in the heart. You cannot look behind the scenes and discern the snares that Satan is laying for your soul. He would lead you to pursue such a course that he can obtain easy access to aim his shafts of temptation against you. Do not give him the least advantage. While God moves upon the minds of His servants, Satan works through the children of disobedience. There is no concord between Christ and Belial. The two cannot harmonize. To connect with an unbeliever is to place yourself on Satan’s ground. You grieve the Spirit of God and forfeit His protection. Can you afford to have such terrible odds against you in fighting the battle for everlasting life? (5T 364.2) MC VC