[rosemary1228]

I have sanded and painted using an oil based paint a church communion table (needed to make it look like walnut; therefore I used a black and brown). Should I use a coating over it to help it from scratching and resist any moisture?

[ballengerb1]

If your paint has cure, not just dried, you can coat with polyurathane. Read the label of the paint to see cure time, it will be much longer than you guesed.