This is really interesting. I have had several conversations with a pastor who draws the line of heresy at "christology," not "soteriology." One can be in error (though not necessarily heresy) with wrong, ill-informed soteriology; however, it is grave heresy if one is wrong about the person and work of Jesus Christ. It makes me think of 2 Cor. 5:21; Heb. 12:1-2; and the Nicene Creed. Click the link below to see the video.
Sproul: What Is the Biggest Upcoming Theological Battle?: "Before you click through to hear his answer, it’d be worth pausing to offer your own answer. Here is Sproul’s:" [link and quote comes from JT's blog @ gospelcoalition]
Any thoughts from you?