Jude now suggests four looks for a child of God, menaced by the apostasy from within the church and by decadence in society. First, there is the outward look: “But ye beloved, building up yourselves on your most holy faith …” It is a favorite Pauline concept. It suggests those outward means of grace God has given to His people to enable them to fortify themselves in the faith. Inherent in the idea of building is activity, but it means activity directed
Jude 20–21