User blog comment:Thetwindler/Jack vs. Archangel Blade and is Jack an Archangel?/@comment-208.108.119.71-20190315174758

The current usage of grace seems to have little to do with how grace was used in the past. Now it seems to power up non-humans, regardless of where the grace originally came from. The parameters of grace, like Castiel's powers, seem to change to fit the needs of the plot.