It is clear from our Lord’s prayer that He does not intend for us to withdraw from contact with the world of non-Christians (John 17:15). Instead, He said we are to be ‘the salt of the earth’ and ‘the light of the world’ (Matthew 5:13-14)

It is clear from our Lord’s prayer that He does not intend for us to withdraw from contact with the world of non-Christians (John 17:15). Instead, He said we are to be ‘the salt of the earth’ and ‘the light of the world’ (Matthew 5:13-14). (Jerry Bridges, The Pursuit of Holiness)