Stoned Stephen Society posted an excellent article over at Banned by HWA. The post, along with some of the comments it provoked, underscores the propensity of many believers to characterize themselves as "TRUE" Christians and others as "False" Christians. It is also interesting to note that the means most often used to evaluate the genuineness of the person's Christianity is their adherence to a particular set of doctrines. In this instance, adherence to mainstream/traditional Christian teachings are regarded by Armstrongites as disqualifying. Likewise, many Traditional Christians regard all Armstrongites as having no part in their fellowship because of their adherence to the heretical teachings of Herbert Armstrong.
Scripture, however, informs us that the presence of God's Holy Spirit is the only sure hallmark of a TRUE Christian (see Romans 8:9). And what is the evidence that the Holy Spirit is present in someone? In his letter to the Galatians, Paul wrote that "the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, Meekness, temperance: against such there is no law." (see Galatians 5:22-23)
Now, I could be wrong, but it seems quite plausible (if not probable) to me that we might find this evidence to be lacking in many of the individuals within each group! Likewise, I have personally known folks in both groups who have clearly exhibited these "fruits." In other words, the thing that identifies whether or not a person is a Christian has very little to do with what one believes about the trinity or the timetable for the fulfillment of prophetic events! Oh sure, a person has to believe that Jesus is the Christ to be a Christian (see John 14:6, I John 5:1, etc.), but it appears the rest of this stuff is superfluous.
Hence, while we are busy excluding each other from membership in the body of Christ, it is comforting to understand that God knows those who belong to "Him." It is also comforting to me to contemplate the fact that this judgement is in the hands of One who is infinitely more merciful and magnanimous than we are. What do you think?