Heed or Drift

The writer of Hebrews (whoever that may be) gives us a warning in Heb 2.1. He says "give...earnest heed to the thing which we have heard." If we do not give heed to what we have heard (that is to the gospel of our salvation), then we will be in danger of drifting away. In other words, if we don't give heed we will drift, or as the KJV puts it: We will "let them slip."

This is a warning that Hebrews repeats over and over. Don't neglect salvation lest you drift away from it and find out that you have left the faith.