My good friend Gabriel Fluhrer has recently finished editing a series of lectures given by J.I. Packer, James Boice, R.C. Sproul, John Gerstner, Sinclair Ferguson, John R. Dewitt and Alistair Begg on the atonement. You can order a copy here. I am sure this will be a very beneficial volume for anyone wanting to grow deeper in their knowledge of the Gospel.
I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve. (Romans 16:17-18)