Which of the following is a biblical metaphor for the Holy Spirit's work in believers?

• A. A fire refining metal
• B. A dove settling
• C. A guarantee of eternal life
• D. A loud trumpet blast

Answer: (C)

The main idea here is that the Holy Spirit functions as a guarantee of our salvation and future inheritance. In Scripture, the Spirit is described as a seal and as a pledge, meaning his presence now assures believers that God will fulfill His promises and give them eternal life (for example, Ephesians 1:13-14 and 2 Corinthians 1:22). This imagery emphasizes certainty and security for the believer's future with God. Other images—like refining fire, a dove settling, or a loud trumpet blast—highlight different aspects of God’s power, presence, or proclamation, but they don’t capture the Spirit’s ongoing role of guaranteeing the believer’s salvation as clearly as the seal/pledge metaphor.