It is all too easy to forget that we are in a spiritual battle. This loss of focus can cause us to grow complacent and open ourselves up to spiritual attacks and even to falling away from the faith completely. As we take a closer look at Hebrews 3:12–15 we will do well to heed the warning of the writer, and to thank God for the church as his means of grace to persevere together. We consider these verses under three broad headings:

1. The Reality of Apostasy (v. 12)

2. The Deceitfulness of Sin (vv. 13b–15)

3. The Blessing of the Ordinary Church (v. 13a)