Feeling nervous is a common thing, especially in ministry when so much of ministry is in front of people and so much of ministry is handling the word of truth. So don’t over spiritualise nerves.
feeling nervous is not necessarily a sign of godliness, and not feeling nervous is not necessarily a sign of arrogance.
Don’t look down on the person without nerves; rather praise God for blessing them with less anxiety. And don’t look down on the person who has nerves, as they may just realise the foolishness of their human attempt to be part of a deeply spiritual event.