Adhering to Pure Doctrine is Not Enough
"We, who possess the pure Gospel and the genuine Sacraments, certainly have a great advantage over those who, perhaps from their youth, were victimized by false preaching. But let us not think that our membership in the orthodox Church and our adherence to the pure doctrine will be sufficient for us. To whom much is given, from him much will be demanded. The purer our doctrine, the more firmly we must cling to it and the more carefully we must guard against the invasion of false doctrine. The richer the comfort we receive from the Gospel, the more faithful we must be in the faith. The more numerous the spiritual blessings we receive from God, the more fervent must be our love and the works in which we demonstrate our gratitude. If we walk as children of the kingdom and not as children of this world, we are blessed, for them we will not be cast out. Instead, we will be taken into the kingdom of eternal glory."
–Dr. C.F.W. Walther
from: "God Grant It"
CPH:2006, p. 150.