That provocation made the indecisive deities immediately solidify their intention to participate in the heavenly battle with determination.
After all, they had the title of deity for a reason, and the indecision from that fear could become a regret that would tarnish their divine power. The heart demon would devour them from within if they now decided to retreat as cowards.
Upon recollection, the strength of all deities weakened in the Earth Realm because they couldn't go against the Earth's rules. So, the battlefield in the Heaven Realm was a battle where they could use their full power.