_Direct._ I. Labour to know God, and to be affected with his attributes, and always to live as in his sight.--No man can know sin perfectly, because no man can know God perfectly. You can no further know what sin is than you know what God is, whom you sin against; for the formal malignity of sin is relative, as it is against the will and attributes of God. The godly have some knowledge of the malignity of sin, because they have some knowledge of God that is wronged by it. The wicked have no practical, prevalent knowledge of the malignity of sin, because they have no such knowledge of God. They that fear God will fear sinning; they that in their hearts are bold irreverently with God, will, in heart and life, be bold with sin: the atheist, that thinketh there is no God, thinks there is no sin against him. Nothing in the world will tell us so plainly and powerfully of the evil of sin, as the knowledge of the greatness, wisdom, goodness, holiness, authority, justice, truth, &c. of God. The sense of his presence, therefore, will revive our sense of sin's malignity. _Direct._ II. Consider well of the office, the bloodshed, and the holy life of Christ.--His office is to expiate sin, and to destroy it. His blood was shed for it: his life condemned it. Love Christ, and thou wilt hate that which caused his death. Love him, and thou wilt love to be made like him, and hate that which is so contrary to Christ. These two great lights will show the odiousness of darkness. _Direct._ III. Think well both how holy the office and work of the Holy Ghost is, and how great a mercy it is to us.--Shall God himself, the heavenly light, come down into a sinful heart, to illuminate and purify it? and yet shall I keep my darkness and defilement, in opposition to such wonderful mercy? Though all sin against the Holy Ghost be not the unpardonable blasphemy, yet all is aggravated hereby. _Direct._ IV. Know and consider the wonderful love and mercy of God, and think what he hath done for you; and you will hate sin, and be ashamed of it.--It is an aggravation which makes sin odious even to common reason and ingenuity, that we should offend a God of infinite goodness, who hath filled up our lives with mercy. It will grieve you if you have wronged an extraordinary friend: his love and kindness will come into your thoughts, and make you angry with your own unkindness. Here look over the catalogue of God's mercies to you, for soul and body. And here observe that Satan, in hiding the love of God from you, and tempting you under the pretence of humility to deny his greatest, special mercy, doth seek to destroy your repentance and humiliation also, by hiding the greatest aggravation of your sin.