The enemy was in the light while Zhou Tian was in the shadows, and his strength had already improved significantly. Under those circumstances, if Zhou Tian still wasn't confident enough to take down those deities, then there wouldn't be any reason for him to continue pursuing vengeance against them. After all, if he couldn't deal with them even in such favorable conditions, then even if given more chances later on, it was unlikely Zhou Tian would ever succeed in his revenge.
Therefore, under the right conditions, when Zhou Tian made that decision, there could be no hesitation in avenging himself against those deities.
If Zhou Tian didn't act now, as someone who had already decided to exact revenge on those deities, he had no intention of leaving them any path to survival. As long as his operations proceeded smoothly, it was almost certain that the group of deities would fall by his hand at that very moment.
