it must be sent - http://kbxhk.wordpress.com/2011/06/29/the-word-of-god-proclaimed/
but also spoken - especially if it is to 'incarnate'
Note the translation:
Psalm 40:6 Sacrifice and offering You did not desire; My ears You have opened. Burnt offering and sin offering You did not require.
LXE : but a body hast thou prepared me
Hebrews 10:5: Sacrifices and offerings you have not desired, but a body have you prepared for me;
talking about the incarnation - it is when the Word enters and embodies flesh
therefore as the church is the sent expression of God, it must speak if it is to enter the world
a silent church is as good as the ever-shouting but never heard creation
it can change nothing unless the Word is proclaimed audibly
for it is in the spoken Word that God the Spirit enters another