How do we know that Christians should act as salt in the world?

Jesus's declaration in Matthew 5:13 serves as a foundational principle for Christian living. The subsequent teachings of the Apostles further clarify this role. For instance, Paul in Colossians 4:5 encourages believers to conduct themselves wisely toward non-believers and to have their speech seasoned with salt. Additionally, in 2 Corinthians 2:14, Paul expresses that believers should manifest the knowledge of Christ in every place, illustrating that their lives should act as a means of grace and influence in a morally decaying world. This collective biblical witness underscores the importance of Christians embodying Christ-like qualities.