I have an input from propresenter, is there a way to add it below the preacher along the bottom even if it’s smaller? I know I can create titles and add the scriptures there but then it’s more work involved.

I'll assume you have Propresenter 7 since you didn't state a version.

ProPresenter 7 has the ability to format the text AND place it Lower Third so create a look to do that and use that look in an input that you send to and overlay.

To make the text stand out better use white text but ADD a thin black border to the text so the characters will have a complete shape even if shown on a white background. (Can be Black text with a white border instead).

If you want a background behind the text, you can define that as a part of the look.

Note that if you use the current look for another purpose and don't want to change it, you can create an additional look just for this and export it from ProPresenter as a different NDI stream which you can use as a different input in vMix. For example I have a full screen look for ProPresenter slides and a Lower Third look for songs, the full screen version is displayed on the projector screen locally with the text present centered top and bottom as well as left and right while the lower third version is used as an overlay for the Stream going to the home bound and traveling members.