2. We must not get our attention off Jesus, and the promises of God in Him, and fix it upon the witness of the Spirit. The witness continues only while we look unto Jesus, and trust and obey Him. When we take our eyes off Him, the witness is gone. Many people fail here. Instead of quietly and confidently looking unto Jesus, and trusting Him, they are vainly looking for the witness; which is as though a man should try to realise the sweetness of honey, without receiving it in his mouth; or the beauty of a picture, while having his eyes turned inward upon himself instead of outward upon the picture. Jesus saves. Look to Him, and He will send the Spirit to witness to His work. 3. The witness may be brightened by diligence in the discharge of duty, by frequent seasons of glad prayer, by definite testimony to salvation and sanctification, and by stirring up our faith. 4. The witness may be dulled by neglect of duty, by sloth in prayer, by inattention to the Bible, by indefinite, hesitating testimony, and by carelessness, when we should be careful to walk soberly and steadfastly with the Lord. 5. I dare not say that the witness of the Spirit is dependent upon our health, but there are some forms of nervous and organic disease that seem to so distract or becloud the mind as to interfere with the clear discernment of the witness of the Spirit. I knew a nervous little child who would be so distracted with fear by an approaching carriage, when being carried across the street in her father's arms, that she seemed to be incapable of hearing or heeding his reassuring voice. It may be that there are some diseases that for the time prevent the sufferer from discerning the reassuring witness of the Heavenly Father. Dr. Asa Mahan told me of an experience of this kind which he had in a very dangerous sickness. And Dr. Daniel Steele had a similar experience while lying at the point of death with typhoid fever. But some of the happiest Christians the world has seen have been racked with pain and tortured with disease. And so there may be seasons of fierce temptation when the witness is not clearly discerned; but we may rest assured that if our hearts cleave to Jesus Christ and duty, He will never leave or forsake us. Blessed be God! 6. But the witness will be lost if we wilfully sin, or persistently neglect to follow where He leads. This witness is a pearl of great price, and Satan will try to steal it from us; therefore, we must guard it with watchful prayer continually.