"It is, however, usually taught, in the current literature of the Christian world, that the gifts of the Spirit were only for the apostolic age; that they were given simply for the planting of the gospel; and that the gospel being once established, the gifts were no longer needed, and consequently were suffered soon to disappear from the church. But the apostle Paul warned the Christians of his day that the “mystery of iniquity” was already at work, and that after his departure, grievous wolves would enter in among them, not sparing the flock, and that also of their own selves men would arise, speaking perverse things to draw away disciples after them. Acts 20:29, 30 . It cannot therefore be that the gifts, placed in the church to guard against these very evils, were ready, when that time came, to pass away as having accomplished their object; for their presence and help would be needed under these conditions more than when the apostles themselves were on the stage of action. PP 25.1"
"For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock."
EGW directly quotes Acts 20:29 to support her argument about the need for spiritual gifts beyond the apostolic age.