In a sermon absolutely rife with scripture, Pastor Dave draws many parallels between the death of Moses and the death of Jesus. More than that we see how every part of who Moses became pointed to Jesus. As Christians we are called to more than what is convenient; we are called to point to Jesus. Inconveniently Pastor Dave's microphone didn't last the entire sermon.
tl;dr version of the sermon is this: Preach Jesus, and if necessary use words.