Good find on indigochild's part. For those who'd like a little more info on this "dapper-looking man"; who he is and why he's important:
Bishop Wayne Jackson runs Great Faith Ministries International, in Detroit. He has been a proponent of Prosperity Theology. This is a very controversial theological system that argues a person's personal wealth is directly related to their holiness. Being rich is considered proof that you are a good person, being poor is proof you aren't, and you can essentially pray, visualize, and donate yourself wealthy.
The validity of this belief system aside, you can see where a proponent would be apt to be more supportive of the wealthier candidate in an election. So it should be no surprise that he was, and based his support on Trump's wealth.
Donald Trump is an example of someone who has been blessed by God,”
Jackson told the Conservative Chronicle. “Look at his homes,
businesses, his wife and his jet. You don’t get those things unless
you have the favor of God.”
As to why Trump invited him to give one of the prayers, the fact that he is a minister who was also a Trump supporter is probably sufficient explanation. He did invite Trump to speak at his church during the campaign, so this wasn't their first interaction of this kind.