68 words sounds like a lot, but it's actually pretty difficult. Here's a good one --
"The 'gospel' is the good news that through Jesus, the Messiah, the power of God's kingdom has entered history to renew the whole world. ... When we believe and rely on Jesus' work and record (rather than ours) for our relationship to God, that kingdom power comes upon us and begins to work through us.... The gospel motivates, guides, and empowers every aspect of our living and worship."
-- Jim Belcher, Deep Church, p. 120-121