For I have "tasted" the sweet Words of our God, and "seen" the goodness of the Lord in the land of the living.. (Psalm 119:102-104, Psalm 27:11-14, Psalm 34:8)
Once you've "Tasted and Seen" the goodness of the living God, it's hard to not tell of the things you know to be true.
I work with CRU (a Christian Ministry on College Campuses) integrating and encouraging Deaf students as they encounter God in their native language - ASL. :)
