The Wells of Salvation Opened by William Spurstowe

"He is not a man that he should repent" (1 Sam. 15:29)

Recently I have been reading William Spurstowe's The Wells of Salvation Opened and it is an excellent and edifying read indeed! In one section titled The Unchangeableness of the Promiser Spurstowe has a wonderful contrast between man's promises and the Lord's:

"To sweeten the application of every promise, exercise your thoughts and faith on the unchangeableness of the purpose and counsel of God to fulfill whatever His promises declare. The promises of men, though they be the expression of an intended and resolved good unto that person to whom they are made, y et they are subject to a deficiency from a double principle. Sometimes, through a want of power to give a being and existence unto what they have spoken, they prove rather the fruitless wishes of a friend that means well than the performances of one that has ability to turn his words into deeds. But that which most frequently makes the promises of men to be as abortive conceptions, and not as full births, is the mutability and inconstancy of their wills, whereby they are not only apt to recall and suspend fulfilling of what they promised, but also to change their love into hatred, and their promises into menances...But it is far otherwise with the promises of God, whose power no lets or impediments can arise to hinder, whose will no contingencies or emergencies can fall out to alter. "He is not a man that he should repent" (1 Sam. 15:29) He is the Lord that changes not (Malachi 3:6) He is the Father of lights, with whom there is no variableness or shadow of change (James 1:17)." -William Spurstowe in The Wells of Salvation Opened p. 49-50