Sola Fide's Danger

"In relation to the Absolute II his attitude differs, at least in appearance. Human intelligence pays homage to the greatness of Jesus' sacrifice on the Cross, Yet man above all wants to consider himself as the beneficiary of the sacrifice of his Lord, who appears to him essentially as his Saviour: salvation seems to him an acquired right, a reward for the divine sacrifice..."

Mouravieff, Gnosis II

Another way to put this is that the Protestant doctrine of Sola Fide, at its worst and perhaps even its best, opens the door to a horrible error - the objectification of Christ's sacrifice in a way impossible even during the era of rampant Indulgences, so that every person can automatically assume themselves as part of the Kingdom, rather than accepting the task to become born again and obtain the inheritance, second born of many brethren under the First.