The unbelieving may possess an excellent moral character; but the fact that he or she has not answered to the claims of God, and has neglected so great salvation, is sufficient reason why such a union should not be consummated. LYL 89.1
The plea is sometimes made that the unbeliever is favorable to religion and is all that could be desired in a companion except in one thing—he is not a Christian. Although the better judgment of the believer may suggest the impropriety of a union for life with an unbeliever, yet, in nine cases out of ten, inclination triumphs. Spiritual declension commences the moment the vow is made at the altar; religious fervor is dampened, and one stronghold after another is broken down, until both stand side by side under the black banner of Satan. Even in the festivities of the wedding, the spirit of the world triumphs against conscience, faith, and truth. In the new home the hour of prayer is not respected. The bride and bridegroom have chosen each other and dismissed Jesus. LYL 89.2
At first the unbelieving one may make no show of opposition in the new relation; but when the subject of Bible truth is presented for attention and consideration, the feeling at once arises: “You married me, knowing that I was what I am; I do not wish to be disturbed. From henceforth let it be understood that conversation upon your peculiar views is to be interdicted!” If the believer should manifest any special earnestness in regard to his faith, it might seem like unkindness toward the one who has no interest in the Christian experience. LYL 89.3
Let those who are contemplating marriage weigh every sentiment and watch every development of character in the one with whom they think to unite their life destiny. Let every step toward a marriage alliance be characterized by modesty, simplicity, sincerity, and an earnest purpose to please and honor God. Marriage affects the afterlife both in this world and in the world to come. A sincere Christian will make no plans that God cannot approve. LYL 90.1