This sermon is for June 19, 2011 Holy Trinity Sunday Click HERE to listen! Can You Define That? Happy Father's Day. The miracle of the the trinity is a mystery to even the most well educated theologian, but what we do know is that mysteries require belief.   But, what do we mean by "believe"? Matthew 28:16-20 28:16 Now the eleven disciples went to Galilee, to the mountain to which Jesus had directed them. 28:17 When they saw him, they worshiped him; but some doubted.28:18 And Jesus came and said to them, "All authority in heaven and on earth has been given to me.28:19 Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit,28:20 and teaching them to obey everything that I have commanded you. And remember, I am with you always, to the end of the age."