G4121 is a verb for increasing, growing, becoming abundant, or being made to increase. Its nine governed forms describe the increase of trespass, sin, grace, love, thanksgiving, equality-related provision, fruit credited to an account, faith, and fruitful knowledge. Increase is therefore not automatically good or bad. The subject, object, agent, and argument determine what is growing and how the passage evaluates it.
Romans 5:20 says that trespass and sin increased while grace abounded still more. Romans 6:1 immediately rejects the inference that believers should remain in sin so grace may increase. Grace is greater than sin, but grace cannot be used to bless deliberate harm or evade repentance and accountability. In Thessalonian texts, the Lord causes love to increase and Paul gives thanks because faith and mutual love are growing. These are gifts and practices of life in Christ, not numerical rankings by which churches compare spiritual worth.
Second Corinthians speaks of grace reaching more people, thanksgiving increasing, and the one who had much not possessing excess. Philippians 4:17 speaks of fruit increasing to the givers' account, while 2 Peter 1:8 joins abundant qualities to fruitful knowledge of Christ. These texts may inform generosity and formation, but they do not promise financial multiplication, authorize fundraising pressure, or make visible growth the measure of holiness.
Lexical sourcetextual_evidencePassage contextBook contextcanonical_contextPastoral application