Why must believers put on the whole armor rather than only one or two pieces?

Part 2 moves from identifying the spiritual opposition in Ephesians 6 to examining the armor itself and the kinds of tests each piece is meant to withstand. The Teaching emphasizes that the whole armor is required: truth establishes the believer’s authority and readiness; righteousness joins faith with obedient living; the gospel of peace grounds the believer in reconciliation and covenant harmony with Yah; faith becomes a shield when trust remains firm even through silence, loss, or an unwanted answer; salvation protects the mind through confidence in Yah’s saving work and promises; and the sword of the Spirit is the whole living Word of Yah, not merely selected New Testament passages. The recurring practical test is whether the believer will submit feelings, traditions, culture, fear, groupthink, and personal expectations to what is written. The Teaching closes with Yeshua’s model for spiritual conflict: ‘It is written.’