From Richard Baxter, The Practical Works of The Rev. Richard Baxter, vol. 19, The Catechising of Families (London, 1830), pages 254–256 [HT: J.I. Packer, The Redemption and Restoration of Man in the Thought of Richard Baxter (Regent, 2003), pages 158–159]:
Q. What must Christ’s ministers say and do for the world’s conversion?
A. Luke xiv, and Matt. xxii, tell you: they must tell men of the marriage-feast, the blessed provision of grace and glory by Christ, and, by evidence and urgency, compel them to come in. …
Q. 5. In what manner must Christ’s ministers preach all this?
A. 1. With the greatest gravity and holy reverence; because it is the message of God.
2. With the greatest plainness; because men are dull of understanding.
3. With the greatest proof and convincing evidence, to conquer prejudice, darkness, and unbelief.
4. With powerful winning motives, and urgent importunity, because of men’s disaffection and averseness. And O what powerful motives have we at hand, from self-love, from God, from Christ, from necessity, from heaven and hell!
5. With life and fervency, because of the unspeakable importance of the matter, and the deadness and hardness of men’s hearts.
Tony Reinke 
Interesting that we value straightforwardness in all of our leaders and quite often they get elected and or handed great responsibility based on is honest character trait, but when address our place in eternity and or mission on earth we often feel the need to approach with caution and fear.