Your trial is very much a home trial, and it is right that you bring it at once before the throne of grace. God, who setteth the solitary in families, hath a tender regard for the household; and He hath often been pleased to sanctify the common troubles of our dwellings for our spiritual good. Let this discovery of mold in your home drive you not to anxious fretting, but to more diligent prayer. There is a sweet word for you in the Psalm: "He maketh peace in thy borders", yours is the border of your own roof and walls, and He can speak peace there.
I have often observed that the Lord bids us begin at home. When Jerusalem was built, every man built before his own house. Our first care for the cause of God should begin under our own rafters, and so too our first cries in trouble. Let family prayer be even more regarded, and private prayer more diligently maintained, while you wait for a remedy. You know how you bank your fire up when you come to chapel in the evening, and have nobody at home, and want to keep the fire alight till you get home? That is often the condition of a Christian. Bank up the fire of your faith now, lest a cold doubt creep in. There is prayer at home needed to wake up all the winds of divine help.
Remember, too, that God in infinite grace preserved Noah and his family alive when destruction swept the earth. Their home was for a season in the ark, a strange dwelling, but one of perfect safety. The Lord can preserve you and your family even if you must for a time quit your house; and He can as easily clear the mold away with a small expense and a swift hand as not. Cast this care upon Him. The Covenant promise holds good for every believer’s household: "I will establish my covenant with thee, and thou shalt come into the ark; thou, and thy sons, and thy wife, and thy sons' wives with thee." Whether the problem be large or little, the same faithful God is your refuge.
Yet, if it please the Lord to permit a more troublesome repair, let not your heart be troubled. Look to that at-home-ness which the Apostle speaks of as confidence, a child-like plainness, peace of heart, a sense of security and therefore courage. The believer may say, "I dwell always in my Father's own house at home." Our true dwelling-place is in the heart of God, where no damp can rot the joys, and no earthly trouble can displace us. Fix your eyes there, and this present annoyance shall grow strangely light.
I trust it will prove but a fleeting shadow, and that you shall soon give thanks for a quick and easy deliverance. But till then, make the trial a messenger to send you to your knees. There is more to be feared from a heart mildewed with unbelief than from any mold on the ceiling. "Go home to thy friends," said the Master, "and tell them how great things the Lord hath done for thee." Even while the workmen are about you, be ready to tell them of the greater cleansing which Christ hath wrought in your soul.