Knowing as we do that the Holy Ghost is the Minister of the Father and the Son—appointed by them, because he is a spirit, he performs a special service to mankind. He delivers truth and light through the Light of Christ and his influence can dwell in each of us simultaneously. In other words, the influence of the Holy Ghost can be everywhere at the same time.
However, no member of the Godhead dwells in us in the literal sense, but all of them dwell in us figuratively to the extent that we are like them. If we have “the mind of Christ” (1 Corinthians 2:16), which we receive by the power of the Holy Ghost, then Christ dwells in us. (McConkie, A New Witness for the Articles of Faith, pg. 271-2.)
