If this is humble orthdoxy, I'm in.
Friends, we’re justified only by trusting in Jesus. Someone who does not believe the gospel that I’ve been talking about very clearly for the last five minutes is not a Christian. Let me say that again. If you get more help in discernment out of this talk than this sentence, you must have this. This is the basis for all true Christian discernment.
Here’s the sentence: Someone who does not believe this gospel is not a Christian.
HT: Justin Taylor.