One of the books which I am currently going through is :"The Satisfaction of Christ"by A.W.Pink. He includes a number of good quotes of Bible scholars/preachers/theologians of the past. The trouble is that he doesn't give full documentation for his sources. Alexander Carson was a friend of Robert Haldane and helped the latter with his Exposition of Romans.I have a good quote but AWP only gives Carson's name and the year of the writing on page 129. The subject matter of the OP has been dealt with by many Reformed men such as Owen,Gill Spurgeon etc.The title of the OP is my own -- not Carson's. Here is Carson's turn to delve into the issue. "There are many who plead for the atonement of Christ,who, in effect, deny it, as well as its open opposers. They suppose that it is a conditional atonement, of efficacy only to those who comply with certain terms. It is evident, however,that a conditional atonement is no atonement in the proper sense of the word; for an atonement must expiate the sins atoned for, just as a payment cancels a debt. Where, then, there has been an actual atonement made, the sins atoned for never can be punished again,any more than a debt once paid can be charged a second time.It would be unjust in God to charge the debt to the account of man that was fully paid by man's Surety.It may be alleged that one man may pay another man's debt upon certain conditions; and that if those conditions are not fulfilled, the debt will be still chargeable upon the debtor.But it is evident that, in such a case, the surety either does not actually pay the debt till the conditions are fulfilled, or if he has conditionally paid it, he is refunded before it is chargeable upon the debtor.In every such case, the debt is not really paid. But Jesus has paid the debt.He has already made atonement; and if they for whom He died are not absolved, the debt is charged a second time. Christ can never be refunded. His blood has been shed; and there is no possibility that what He suffered can be now either more or less.They,then, who suspend the efficacy of the atonement of Christ upon conditions to be complied with by man, in effect deny that atonement has been truly made."