In this installment of the Definitions Matter series, we examine the difference between modern vocabulary and biblical terminology and why that distinction is critical for accurate interpretation. Language shifts over time. Words soften. Cultural usage repurposes meaning. But Scripture was written within covenant, legal, and historical frameworks that cannot be interpreted through a modern psychological lens without distortion. In this teaching, we break down key terms including: • Love as covenant loyalty, not emotional preference • Fear as reverent alignment, not anxiety • Grace as authorization, not exemption • Sin as covenant breach, not personality flaw • Judgment as lawful discernment, not criticism • Blessing as covenant alignment, not comfort • Heart as internal governance, not emotion We also model how to properly study a verse using the original Hebrew structure in Proverbs 4:23, demonstrating how definition determines doctrine. If definitions drift, theology drifts. Before asking what a passage means to you, you must first ask what it meant within its original covenant context. Next in this series: Translation Is Not Interpretation.