Mark Driscoll's rejection of the doctrine of the eternal generation of the Son of God (declared in ecumenical creeds and Reformed confessions) is discussed here (Part 1), here (Part 2), here (Part 3), and here (Part 4).
It appears Cornelius Van Til was on the mark once again when he said:
It is sometimes contended that ministers need not be trained in systematic theology if only they know their Bibles. But "Bible-trained" instead of systematically trained preachers frequently preach error. They may mean ever so well and be ever so true to the gospel on certain points; nevertheless, they often preach error. There are many "orthodox" preachers today whose study of Scripture has been so limited to what it says about soteriology that they could not protect the fold of God against heresies on the person of Christ. Oftentimes they themselves even entertain definitely heretical notions on the person of Christ, though perfectly unaware of the fact. (An Introduction to Systematic Theology [New Jersey: P & R, 2007], ed. William Edgar, 22)