"Then said I, Woe is me! for I am undone; because I am a man of unclean lips, and I dwell in the midst of a people of unclean lips--for my eyes have seen the King, the Lord of hosts." Isaiah 6:5
God has described his Zion as "full of wounds, and bruises, and putrefying sores." When the Church of God fell in Adam, she fell with a crash which broke every bone and bruised her flesh with wounds which are ulcerated from top to toe. Her understanding, her conscience, and her affections were all fearfully maimed. Her understanding was blinded; her conscience stupified, and her affections alienated. Every mental faculty thus became perverted and distorted.
As in a ship-wrecked vessel the water runs in through every leak, so when Adam fell upon the lee-shore of sin and temptation, and made shipwreck of the image of God in which he was created, sin rushed into every faculty of body and soul, and penetrated into the inmost recesses of his being.
Or to use another figure; as when a man is bitten by a poisonous serpent, the venom courses through every artery and vein, and he dies a corrupted mass from head to foot, so did the poison fang of sin penetrate into Adam's inmost soul and body, and infect him with its venom from the sole to the crown.
But the fearful havoc which sin has made is never seen nor felt until the soul is quickened into spiritual life. Oh, what work does sin then make in the conscience, when it is opened up by the Spirit of God! Whatever superficial or shallow views we may have had of sin before, it is only as its desperate and malignant character is opened up by the Holy Spirit that it is really seen, felt, grieved under, and mourned over as indeed a most dreadful and fearful reality. It is this sword of the Spirit which cuts and wounds; it is this entrance of life and light that gashes the conscience; it is this divine work which lacerates the heart and inflicts those deep wounds which nothing but the "balm in Gilead" can heal.
And not only is a poor convinced sinner cut in his conscience, inwardly lacerated and gashed by sin as thus opened up by the Spirit of God, but, as the prophet speaks, "the whole head is sick, and the whole heart faint." He is thus laboring under a complication of diseases. Every thought, word, and action is polluted by sin. Every mental faculty is depraved. The will chooses evil; the affections cleave to earthly things; the memory, like a broken sieve, retains the bad and lets fall the good; the judgment, like a bribed or drunken juryman, pronounces heedless or wrong decisions; and the conscience, like an opium-eater, lies asleep and drugged in stupified silence.
This miserable state, brought upon us and into us by the fall, all the people of God must in some measure feel. It is of no use mincing the matter and saying that a person can be saved by the grace of God and the blood of Christ, without knowing anything of the depth of misery and wretchedness into which he is sunk as the fallen child of a fallen father. We must go down into the depths of the fall to know what our hearts are and what they are capable of; we must have the keen knife of God to cut deep gashes in our conscience and lay bare the evil that lies so deeply imbedded in our carnal mind, before we can enter into and experience the beauty and blessedness of salvation by grace.