I have advocated knowing at least ten things about a people that such may be possible. This is what it takes to overcome cultural stumbling blocks.
Discipleship
6 Marks of a Disciple
James Emery White: Which Religious Type Are You?
Spiritual Formation Over Great Strategy
The (Very) False Dichotomy Between Evangelism & Discipleship
Make no mistake about this false dichotomy—apart from intentional outreach and evangelism, there will be no one to disciple.
Spiritual Transformation – 3 Basics for Every Believer
Becoming a follower of Jesus should bring spiritual transformation: we are born from above; we acquire his character; and we imitate his works.