Manner is being used in this excerpt
to describe the passion and emotion that the preacher puts into his
sermon. This manner is a one of a kind manner that brings people
together to worship the Lord. As mentioned in the excerpt, he has
heard the sermon multiple times but he still feels enlightened when the
preacher speaks because the preacher touches people through his sermons
with the words written in the scripture and and illustrating the
scripture into real life situations so that people can understand God's
word.