Here are some thoughts from Local Church Evangelism, edited by David Wright and Alastair Gray.
Worship comes first.
“Praise is the primary form of the communication, the sheer enjoyment of the grace of God in our lives – all other communication is an overflow of this, the spread of its scent, affirming in appropriate ways, in various situations, the content and delight of praising God” (p. 49).
Worship leads to Witness.
“the church should be united in love and purpose, wide open to the Spirit of Jesus in prayer and with the outward look of openness to others in love” (p. 28).
Come to Christ and Go for Christ.
“Jesus says both ‘I am the light of the world’ … and ‘You are the light of the world’” (p. 43).