Matthew 5:14-16 reads,
"“You are the light of the world. A city set on a hill cannot be hidden. Nor do people light a lamp and put it under a basket, but on a stand, and it gives light to all in the house. In the same way, let your light shine before others, so that they may see your good works and give glory to your Father who is in heaven.(Mt 5:14-16)."
John Piper summarizes:
This text shows that there is an attitude and lifestyle that is so distinctive that when it appears in the arena of fallen humanity it gives valid evidence that there is a God and he is a gloriously trustworthy heavenly father. When the reality of God’s promises to take care of us and to work everything together for our good grips our hearts so that we do not fall prey to greed or fear or vainglory but rather manifest a contentment and a love and a freedom for other people, then the world will have to admit that the one who gives us hope and freedom must be real and glorious.
Hide it under a bushel? No!