My bookshelves groan with the weight of books I've started and haven't yet finished. I recently picked up Kelly's Notes on Romans again to try to make some progress on it.
This gem is from Chapter Eight (pp. 131–132)
This deliverance then consists of these two parts: that Christ died for our sins according to the scriptures, and that we are placed in and as Christ before God. For Christ was not an individual solely, who simply came and did a great work for others, but apart from bearing our sins He is a public man in an infinitely better sense than any other could be. The queen, for instance, is a public person. As sovereign she gives expression to whatever is the law of the land; her sign-manual is supreme authority. Properly speaking there is no statute law without her. I use this merely as an illustration. But the Lord Jesus is a public person in an infinitely higher yet closer and nearer way, because no subject could be said to be in the sovereign as the Christian is in Christ. She may represent the people that she governs, but there could be nothing more intimate in their relation to her. The wonderful truth of redemption shows that the Lord Jesus is a public person so far as to give us a place in Himself above, and not only in identifying Himself with our guilt before God which He did once for all on the cross. In another sense He died for every man. Nothing can be more certain than that both are true, that He died for those that believe, and that He died for every man — with this difference, that the believer alone can say that He bore our sins in His own body on the tree. But it is the guilt of the natural man that, Christ having died for all, he nevertheless rejects Him. Yes, the deepest aggravation of unbelief is that, though Christ came for every creature, none would have Him. Not a living soul would have had Him unless by the special grace of God that opens a believer's eyes and inclines his heart to receive Him. This God does for the elect, though all be responsible.
The distinction between Christ dying for all, and His dying for the believer is helpful. Both are true, but they aren't the same thing. How very Kelly!