Matthew 5:14 (ESV)

You are the light of the world. A city set on a hill cannot be hidden.

Hebrews 10:24–27 (ESV)

And let us consider how to stir up one another to love and good works, not neglecting to meet together, as is the habit of some, but encouraging one another, and all the more as you see the Day drawing near. For if we go on sinning deliberately after receiving the knowledge of the truth, there no longer remains a sacrifice for sins, but a fearful expectation of judgment, and a fury of fire that will consume the adversaries.