Matthew 28:19 says to go and to make diciples of ALL nations baptizing them in [water baptizism] in the name of the Father and of the Son and of the Holy Spirit. (Paraphrased from that verse.)
So if we hoard our faith to ourselves, we set up for spiritual "blow-up" and we DIE! It can become very dangerous if we are not careful.
So, like me and my faith, is your sharing shy? Cross the street and not the ocean to spread the Good News of the gospel!
Go for it!