Antonio Vivarini and Giovanni dAlemagna – Saints Francis and Mark Part 1 National Gallery UK

The picture has something of this: church, spirituality, holy, saint, god, people, prayer, man, religious belief, sacred, wear, worship, religious, cross, decoration, symbol, book.
Perhaps it’s a painting of two men, one holding a cross and the other holding a crucifix, in front of a black and gold background.