During World War II, the British scholar and writer Clive Staples Lewis did a series of radio talks for the BBC on Christianity. Sort of an aid to keeping a stiff upper lip under the Luftwaffe bombing of England. The substance of his talks were later collected and edited into his book Mere Christianity, and they had a resurgence of popularity in the mid-Sixties (when I first encountered the man and his writings).
The gent here has, for some time, been producing a series of “doodles” illustrating Lewis’ themes on YouTube. They are rather good.