Here is what I came up with. I put all of the physical powers under the changed form. The idea being that God manifests these powers in him, and they're not something he calls up as he needs them or just because he wants them. The rules for how they manifest are listed below mostly unchanged from what you had and are primarily instantaneous, meaning that if someone tries to ambush him with supernatural power, the corona appears and the toughness is there to meet it. The exception to what you had is that they are based on him following a righteous path. (This was a character element he asked for in his back story when we first started working on his character.) The further he strays from a righteous path, the weaker his powers become against supernatural foes. (It fits thematically with the covenant Judaism has with God. Follow the path and God will provide, but stray from the path and reap what you sow.) I also swapped out Holy Touch for Guide my Hand just to add a little extra utility. With claws and Supernatural Strength, he should be plenty good, and if he wants he can add some gauntlets, or knuckles dusters, or something for an added Weapon:1.
Question though, did you mean for this
those with <3 refresh get only su strength
to say supernatural strength, or did you mean Inhuman?
Powers:
Righteousness [-2]
Guide my Hand [-1]
Human Form [+2] (Powers only manifest against supernatural opponents to a degree in accordance with following a righteous path. This is a glow like that around Mouse's muzzle; it can't be hidden and can't be controlled.
Against powerful supernatural beings with more than 5 refresh in powers, the player gets the full compliment of powers listed below.
Against minor supernatural beings with less than 5 refresh of powers, the player gets only Inhuman levels of power.
Against those with less than 3 refresh, the player gets only Supernatural Strength.
Against those with 1 or less refresh, the player gets only Claws.
Each of these is dropped by one step if the player has not been following a righteous path. This effect can stack.)
Supernatural Toughness [-4]
Catch [+3] (Damage inflicted by mortals or damage inflicted without any supernatural assistance.)
Supernatural Strength [-4] (Limited to direct attacks on supernatural beings or to overcome obstacles separating you from such an enemy.)
Claws [-1] (Same limits as strength.)
Total cost: -7
Skills:
Superb: Fists, Might
Great: Athletics, Conviction
Good: Intimidation, Endurance
Fair: Investigation, Alertness
Average: Presence, Empathy