Armor item #4 addresses faith as a shield. As grace through faith, not by works, is essential to salvation, so also to live in Christ (Gal 2:20). Faith in God protects us (Prov 30:5) and is far better than trusting in things or people (Jer 17:5-8). What does it mean to live by faith? Why is faith difficult? What does trusting look like? Eph 6:16 and Col 2:6-10 provide insight into how faith is like a shield.