"Christianity begins with a triumphant indicative; Christianity does not begin with an urgent imperative."- Carrick, IP, p27.
And so, God is not looking for the best salesman for the gospel, someone who would do a great job working for one of those time-share vacation spots. He is calling for heralds; servants who faithfully proclaim what God has said and done through Jesus Christ.
No doubt, these heralds must proclaim what God has said, and some of what God has said, quite a bit actually, is in the form of urgent imperatives. Nevertheless, as a faithful study through the flow of the book of Ephesians so wonderfully illustrates, we only obey imperatives after we have believed indicatives.