Where does “heilic (hailig” come from?

heilic (hailig (Middle High German) comes from Old High German heilag, from Proto-West Germanic hailag, from Proto-Germanic hailagaz, from Proto-Germanic hailaz, from Proto-Indo-European *kéh₂ilos — healthy.

Ancestry of “heilic (hailig”, step by step

StepLanguageWordMeaning
1Old High Germanheilagholy
2Proto-West Germanichailagholy, sacred
3Proto-Germanichailagazholy, sacred
4Proto-Germanichailazwhole, unbroken, intact; entire, complete; hale,...
5Proto-Indo-European*kéh₂iloshealthy
Every word from Proto-Indo-European *kéh₂ilos →Every word from Proto-Germanic hailaz →Every word from Proto-Germanic hailagaz →