I cannot speak to the origin of New Year's resolutions. What strikes me as an obvious differnece is that personal covenanting is a religious ordinance that can only be rightly conducted as a response of one who owns the covenant of grace and is living out of and applying it, relying on the grace of God to enable us to fulfil our vows. As such, the matter is particularly controlled by the requirements of God's word. New Year's resolutions tend to be empty of religious significance, may be made by unbelievers and often respect worldy self-improvemet projects which many undertake in the strength of their own resolve and will-power and thus fail.
Speaking of Boston, below is the text of his own personal covenant. It is superb.
A Personal Covenant
by Thomas Boston
August 14, 1699
I, MR. THOMAS BOSTON, preacher of the gospel of Christ, being by nature an apostate from God, an enemy to the great JEHOVAH and so an heir of hell and wrath, in myself utterly lost and undone, because of my original and actual sins, and misery thereby; and being, in some measure, made sensible of this my lost and undone state, and sensible of my need, my absolute need of a Saviour, without whom I must perish eternally; and believing that the Lord Jesus Christ, the eternal Son of the eternal God, is not only able to save me, by virtue of his death and sufferings, but willing also to have me (though most vile and ugly, and one who has given him many repulses), both from my sins, and from the load of wrath due to me for them, upon condition that I believe, come to him for salvation, and cordially receive him in all his offices; consenting to the terms of the covenant.
Therefore, as I have at several opportunities before given an express and solemn consent to the terms of the covenant, and have entered into a personal covenant with Christ; so now, being called to undertake the great and weighty work of the ministry of the gospel, for which I am altogether insufficient, I do by this declare, That I stand to and own all my former engagements, whether sacramental, or any other way whatsoever; and now again do RENEW my covenant with God; and hereby, at this present time, do solemnly COVENANT and ENGAGE to be the Lord’s and MAKE a solemn resignation and upgiving of myself, my soul, body, spiritual and temporal concerns, unto the Lord Jesus Christ, without any reservation whatsoever; and do hereby give my voluntary consent to the terms of the covenant laid down in the holy scriptures, the word of truth; and with my heart and soul I TAKE and RECEIVE Christ in all his offices, as my PROPHET to teach me, resolving and engaging in his strength to follow, that is, to endeavour to follow his instructions.
I TAKE him as my PRIEST, to be saved by his death and merits alone; and renouncing my own righteousness as filthy rags and menstruous cloths, I am content to be clothed with his righteousness alone; and live entirely upon free grace; likewise I TAKE him for my ADVOCATE and INTERCESSOR with the Father: and finally, I TAKE him as my KING, to reign in me, and to rule over me, renouncing all other lords, whether sin or self, and in particular my predominant idol; and in the strength of the Lord, do resolve and hereby engage, to cleave to Christ as my Sovereign Lord and King, in death and in life, in prosperity and in adversity, even for ever, and to strive and wrestle in his strength against all known sin; protesting, that whatever sin may be lying hid in my heart out of my view, I disown it, and abhor it, and shall in the Lord’s strength, endeavour the mortification of it, when the Lord shall be pleased to let me see it. And this solemn covenant I make as in the presence of the ever-living, heart-searching God, and subscribe it with my hand, in my chamber, at Dunse, about one o’clock in the afternoon, the fourteenth day of August, one thousand six hundred and ninety-nine years.
T. BOSTON
