People need to hear the Gospel—to hear that God loves them, Christ died for them and that they can have eternal life.
Romans 10:13-14 says, “Everyone who calls on the name of the Lord will be saved.’ How, then, can they call on the one they have not believed in? And how can they believe in the one of whom they have not heard? And how can they hear without someone preaching to them?”
However, sometimes fear can cripple us when it comes to sharing our faith. You don't want to offend anyone, or seem like a Jesus freak or be rejected. Maybe you’re afraid to share your faith because you don’t know what to say.
But "God has not given us a spirit of fear, but of power, love, and a sound mind." 2 Timothy 1:7