Explaining the difference in pronunciation of th to someone not speaking english...
No, Thy Heaven is not the said the same as thigh heaven... the th in one is voiced, but not the other...
@sentientdessert
In Old English and its precursors, these sounds were represented by different characters.
https://en.m.wikipedia.org/wiki/Thorn_(letter)
https://en.m.wikipedia.org/wiki/Eth
@voltronic I wonder if printing was a reason for them to fall out of usage.