Great job - possible church origin?
You have certainly cleaned it up well and it looks good. You may find that the oil finish attracts a lot of dust though and a better finish would be shellac. It is easier to apply than many think, and ready-made shellac solutions are around - e.g. UBeaut products. I wouldn't recommend the orange flake shellac, but that is a personal taste issue.
My guess, given its dimensions, is that it may have had an ecclesiastical use - holding a supply of prayer books or hymn books. Churches often had many beautiful wooden cabinets made by professional makers and also by talented parishioners.
It's a lovely thing to have rescued in any case.
David
Edit for typo