The answer is: New Testament

Only appears twice in KJV O.T.

Isn’t it intriguing how the concept of faith shows up differently across the Old and New Testaments? In the New Testament, it’s a central theme — think about all the richness in stories of Jesus, His miracles, and teachings. The Greek word “pistis,” which means faith, appears numerous times, highlighting its vital role in the relationship between individuals and the divine. When Jesus commends someone's faith—like the Roman centurion in Matthew 8—it’s as if He is doubling down on faith as a personal and collective connection with God.

Conversely, the Old Testament treats faith a bit differently. The occurrences are sparse, and when it’s mentioned, it usually connects back to the broader concept of trust and allegiance to God, reflective of a covenant relationship. For instance, Habakkuk 2:4 famously states, “the just shall live by faith,” showing an acknowledgment that faithfulness is a method of survival for the righteous.

This leads to an interesting echo: Paul, writing to the early church, quotes that very verse (Roman 1:17) just as a nod to the past while intensifying its significance for believers. This celebration of faith continues today in varying expressions but at its heart, remains a fundamental tie to living with purpose and assurance. In studying both Testaments, we uncover a continuity that challenges and enriches our journey of understanding faith across the ages!