4K HD Wallpaper: Guardian Angel
Oe of the most beautiful image related to churches is coming from talented Anja Osenberg who shares the illustration under CC0 license. Well, if you'd like to have a religious image in your desktop background or homescreen phone, check this one in your optimal resolution.
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)