#showtooltip
/cast [talent:3/3] Blinding Light; [@mouseover,harm,nodead] [] Repentance
If you want to have it become HoJ rather than a ? when neither of those talents are selected then it becomes:
#showtooltip
/cast [talent:3/3] Blinding Light; [talent:3/2,@mouseover,harm,nodead] [talent:3/2] Repentance; Hammer of Justice
https://us.forums.blizzard.com/en/wow/t/useful-macro-templates/42937