The good man brings good things out of the good stored up in his heart, and the evil man brings evil things out of the evil stored up in his heart. For out of the overflow of his heart his mouth speaks. (Lk. 6:45)
Because Jesus was pure and sincere (Heb. 7:26), He did not use manipulative tactics in His communication. He refused to use flattery to get the religious leaders to follow Him. He did not candy-coat what it would be like to be His disciple when people asked about it just to bump up the number of followers.
Because Jesus was true, truth itself (Jn. 14:6), He could not be deceptive in His communication. He told the disciples what to expect. He even told them how He genuinely felt (i.e., grieved in spirit). He said what was hard for people to hear rather than try to smooth it over to make them feel better.
Because Jesus was humble, gentle, and meek (Matt. 11:29), He was not pretentious or pompous in His communication. He spoke in ways people would understand, not using high and lofty words just so people would realize how great He was.
Implications for Us in Ministry:
Check your motivations.
We too are to be pure and sincere. (Rom. 12:9; James 3:17; 1 Tim. 1:5)
How easy it can be to try to coerce people into doing what we want by the way we say something.
We too are to be honest with one another and speak the truth. (Eph. 4:15; Col. 3:9)
How easy it can be to stretch or compromise the truth.
We too are to humble and gentle. (Eph. 4:2)
How easy it can be to speak in ways we hope will make people think better of us, like we are smart or have it all together.