Listen carefully. I can absolutely guarantee that the first thing you will be asked to do in your oral examination is to summarize your research (thesis or guided research projects). I do this at the very beginning of every exam. So, you should not be surprised when this happens.
For some reason, though, this is an area where ThM students often struggle. Two things in particular stand out. First, the summaries usually take too long. You should be able to state your thesis and summarize the main points of the argument in just a couple of minutes. If you can’t do that, it suggests that you really don’t understand your argument all that well. Trust me, you’ll have plenty of time to talk about the rest of it later. For now, focus on giving clear and succinct statement of the thesis and argument.
Second, the summaries often fail to include some comment on why the research matters. Why is it significant? Why should anyone care? Does it have some impact on life and ministry? Does it contribute in an important way to your own development, or does it have significance for further research? Make it clear that this was not just an academic hurdle that you had to clear to graduate. (If it actually was, lie.)
The presumption is that if you’ve spent this much time on something, you should be able to provide a clear and meaningful summary. Make sure that you come prepared to do so.