"You ought to know by this time that Christ is in you, unless you are not real Christians at all. And when you have applied your test, I am confident that you will soon find that I myself am a genuine Christian. I pray God that you may find the right answer to your test, not because I have any need of your approval, but because I earnestly want you to find the right answer, even if that should make me no real Christian." 2 Corinthians 13:6,7
And, having read that, I want you to internalize this eternal, internal truth from this section: according to Paul of Tarsus, the "real Christian" is he or she with verifiable, inward experience of the life of Jesus living within them. (Let me type that again: the "real Christian" is he or she with verifiable, inward experience of the life of Jesus living within them.)
Not just having all the rote Christian knowledges.
Nor a perfect record of faithful Sunday attendances.
Or, even, a reputation for doing nice "Christian" things.
The "real Christian" is he or she with verifiable, inward experience of the life of Jesus living within them.
"Verifiable" by who? You and the Holy Spirit.
"Inward" meaning what? This all works from the inside out.
The "life of Jesus living"--how? To the fullest, full extent of His own heavenly-earthly power and glory--to the degree that you'll abide in Him and let Him.
It's interesting: where Phillips translates verse 6 as "unless you are not real Christians at all," the simple Greek says, "if you are not unapproved"--ἀδόκιμοι. The meanings of that word are: "discredited, not approved, unsatisfactory, unconvincing, and (to me, the most interesting) not legal tender."
So let's flip this on its head, shall we? As we choose to engage more and more with the inward reality of the indwelling of Jesus within us, what will we become--and be? Creditable with His words and witness; approved by Him for the purposes of His Kingdom; utterly, meaningfully satisfactory to His very own heart; mightily convincing--to Him and others--in the devotion of our lives; and (and, again, my favorite) legal tender of the heavenly economy, ready to spend and be spent, unable to be counterfeited because our weights and measures are GLORY.
One last time: the "real Christian" is he or she with verifiable, inward experience of the life of Jesus living within them. My friends, let us never stop moving in the direction of greater and greater encounter with Him, right here within!