You may be cast down by many doubts and fears, and lose the sense of the Lord's love to your soul, but you cannot lose the reality, nor is your faith destroyed by the hottest flame. It is like gold; the fire melts away and separates the dross and tin, but never touches the gold.
In your hottest trials your faith will not have lost a particle. Neither will your hope be destroyed, however you may be cast down about your state or standing; for not a particle of hope, or of any one Christian grace can ever be lost. They may seem to suffer diminution as the apostle speaks, "If a man's work shall be burned, he shall suffer loss" (1 Cor. 3:15); but it is no real loss,—it is merely the dross taken away, that he may come forth a vessel for the finer.
The work of the Holy Spirit is as indestructible as the work of Christ; and thus every grace which he implants in the soul remains there untouched, unharmed in all its divine integrity. Love, patience, submission, and humility all remain unhurt in the flame, though the dross which is mixed with them is taken from them that they may shine all the brighter.
Thus though you may be plunged into the hottest fires, you will not be destroyed, any more than the three children were destroyed in Nebuchadnezzar's furnace, or Jonah in the belly of the whale.