Stamping is a fun and easy technique to add to your bible journaling.  I have wood stamps, alphabet stamps, clear stamps (you have to put these guys on an acrylic block, but they are super easy to clean and store which are big pluses in my book).
I use 2 different kinds of inks in my bible, Pigment inks and Archival ink. Most of the time I prefer to use my archival inks because I know its there and I can use whatever medium (like watercolor) on top and it will not bleed but you do need to have your page prepped if you want to avoid bleed through. Pigment inks do not bleed through your paper because they sit on the surface. Both these types of inks do require some extra dying time to avoid smudging so I like to give it a blast from my heat tool before moving on.
If you are feeling brave, you can also try embossing in your bible. I grabbed an embossing ink pad and some powder at Hobby Lobby and gave it a go in my bible. Embossing works by stamping the image with the ink and then adding powder on top, covering the whole image. You then shake out the extra dust (make sure to save it and put it back in your container for next time) and then set it with a heat tool. If you choose clear colors, you can then add color on top with water colors or distress inks and have a negative image.