2 Timothy 2:19

The doctrine of the Resurrection is the sure foundation of God, which stands as a fundamental article of the Christian faith. When the time comes, the Lord will show that He knoweth them that are his, who will be those that during their life on earth have, as Christians, departed from iniquity. This seal] the inscription stamped upon the foundation stone of the faith.

20, 21. In the visible Church there would be some hearts of gold incapable of being seduced, but there would also be some of less precious material liable to be led away by the heterodox teachers; if the latter purged themselves from their false teachers by rejecting their doctrine and ministry, they too would become vessels unto honour.

22-25. Personal to Timothy.