Just because you care, encourage those you know to develop a relationship with the Lord. The truth will only help them.
Read: Isaiah 50, 10-11
10 Who among you fears the Lord
and obeys his servant?
If you are walking in darkness,
without a ray of light,
trust in the Lord
and rely on your God.
11 But watch out, you who live in your own light
and warm yourselves by your own fires.
This is the reward you will receive from me:
You will soon fall down in great torment.