Survival 1984, page 84
All who want to be marked as having God’s approval must accept the instruction that Jehovah is providing through that “slave” class and become true worshipers of Jehovah. They must not be persons who honor Jehovah with their mouths but who really love the world’s ways. (Isaiah 29:13, 14; 1 John 2:15) They must love Jehovah and his standards and feel grieved at heart, “sighing and groaning,” over teachings and practices that dishonor him. No one will put a literal ink mark on their forehead. But when they have the symbolic mark it will be obvious to all that, as dedicated, baptized Christians, they have put on the “new personality” described at Ephesians 4:24. They have a living faith. Publicly and privately they endeavor to do what will honor Jehovah. Not only persons who have come out of Christendom but all, regardless of background, who hope to survive into the “new earth” as associates of the anointed class must have this mark.
Particularly significant is the fact that Jehovah’s executioners were told that age, sex, singleness or marriage relationship was no reason to spare an offender against Jehovah. A married person must individually have his or her mark in order to be spared. If parents resist having their children marked or if they fail to bring them up as servants of Jehovah, they must bear the responsibility for what happens to those children. Although obedient children of godly parents are viewed as “holy” by Jehovah, rebellious ones are not. (1 Corinthians 7:14; Psalm 102:28; Proverbs 20:11; 30:17) If children are old enough to become baptized Christians but do not want to live up to the requirements, whether they are baptized or not, their age will not result in their being spared. How vital, then, for each individual of responsible age to be clearly marked as a person dedicated to God and doing his will!