Romans 8:9
Amplified Bible (AMP)
But you are not living the life of the flesh, you are living the life of the Spirit, if the [Holy] Spirit of God [really] dwells within you [directs and controls you]. But if anyone does not possess the [Holy] Spirit of Christ, he is none of His [he does not belong to Christ, is not truly a child of God].— Romans 8:9 (AMP)