A note on the experience of the presence of the Spirit as you are sharing the homily: the temptation is, as you say, to take this as a sign to keep going and amp up the delivery. However, the opposite is more likely. When one reads the writings of Orthodox monks in the Philokalia, many of them share that when our hearts become warmed by the Holy Spirit’s presence, we should become silent and allow ourselves to be in that space fully, giving the Spirit our full attention. Why? Because it is this heart to heart encounter that the liturgy, prayer, worship, and homilies are meant to bring about.

In some ways, you could think of this beautiful awareness of Jesus’ presence as the amen. Now it is time to let your heart listen.

If I still preached regularly, I would make this change. If I sensed Christ’s presence and the weight of the Spirit, I would stop my sermon. I would share with everyone why and invite us all as a gathered community to listen in our hearts and give the Holy Spirit the space and time to be the focus of our attention.

Of course, that might weird some churches out so there’s that to consider 😎.