This is thy christianity; thy espousals with Christ. It is sacramentally done in baptism; but till it be personally owned, and heartily renewed by men at age, they have no reason to be numbered with adult believers, nor to dream of a part in the blessings of the covenant. It is pity it is not made a more serious, solemn work, for men thus to renew their covenant with God. (For which I have written in a "Treatise of Confirmation," but hitherto in vain.) However, do it seriously thyself: it is the greatest and weightiest action of thy life.
To this end, peruse well the covenant of grace which is offered thee in the gospel: understand it well. In it God offereth, notwithstanding thy sins, to be thy reconciled God and Father in Christ, and to accept thee as a son, and an heir of heaven.
The Son offereth to be thy Saviour, to justify thee by his blood and grace, and teach thee, and govern thee as thy Head, in order to thy everlasting happiness. The Holy Spirit offereth to be thy Sanctifier, Comforter, and Guide, to overcome all the enmity of the devil, the world, and the flesh, in order to the full accomplishment of thy salvation; nothing is expected of thee, in order to thy title to the benefits of this covenant, but deliberately, unfeignedly, entirely to consent to it, and to continue that consent, and perform what thou consentest to perform, and that by the help of the grace which will be given thee. See, therefore, that thou well deliberate of the matter, but without delays; and count what thou shalt gain or lose by it. And if thou find that thou art like to be a loser in the end, and knowest of any better way, even take it, and boast of it, when thou hast tried the end; but if thou art past doubt, that there is no way but this, despatch it resolutely and seriously.
And take heed of one thing, lest thou say, Why, this is no more than every body knoweth, and than I have done a hundred times, to give up myself in covenant to God the Father, Son, and Holy Ghost. Dost thou know it, and yet hast thou not done it? Or hast thou done it with thy lips, and not unfeignedly with thy heart? Lament it as one of thy greatest sins, that thou hast thus provokingly dallied with God; and admire his mercy, that he will yet vouchsafe to enter into covenant with one, that hath hypocritically profaned his covenant. If thou hadst ever seriously thus covenanted and given up thyself to God, thou wouldst not have neglected him by an ungodly life, nor lived after to the devil, the world, and the flesh, which were renounced. I tell you, the making of this christian vow and covenant with God in Christ, is the act of greatest consequence of any in all thy life, and to be done with the greatest judgment, and reverence, and sincerity, and foresight, and firm resolution, of any thing that ever thou dost. And if it were done sincerely, by all that do it ignorantly, for fashion, only with the lips, then all professed christians would be saved; whereas now, the abusers of that holy name and covenant will have the deepest place in hell. Write it out on thy heart, and put thy heart and hand to it resolvedly, and stand to thy consent, and all is thine own: conversion is wrought when this is done.
_Direct._ XIV. In present performance of thy covenant with God, away with thy former sinful life; and see that thou sin wilfully no more; but as far as thou art able, avoid the temptations which have deceived thee.
God will never be reconciled to thy sins: if he be reconciled to thy person, it is as thou art justified by Christ, and sanctified by the Spirit: he entertaineth thee as one that turneth with repentance from sin to him. If thou wilfully or negligently go on in thy former course of sin, thou showest that thou wast not sincerely resolved in thy covenant with God.
I know infirmities and imperfections will not be so easily cast off, but will cleave to thee in thy best obedience, till the day of thy perfection come. But I speak of gross and wilful sin; such as thou canst forbear, if thou be but sincerely, though imperfectly, willing.[32]
Hast thou been a profane swearer or curser, or used to take God's name in vain, or used to backbiting, slandering, lying, or to ribald, filthy talk? It is in thy power to forbear these sins, if thou be but willing. Say not, I fall into them through custom before I am aware; for that is a sign that thou art not sincerely willing to forsake them. If thou wert truly penitent, and thy will sincerely opposite to these sins, thou wouldst be more tender and fearful to offend, and resolved against them, and make a greater matter of them, and abhor them, and not commit them, and say, I did it before I was aware; no more than thou wouldst spit in the face of thy father, or curse thy mother, or slander thy dearest friend, or speak treason against the king, and say, I did it through custom before I was aware. Sin will not be so played with by those that have been soundly humbled for it, and resolved against it.