This is the will of the ORIGIN

While Ren was waiting for something or someone in the Void Sect the situation in the land of the Gods was getting worse. The Demi-Gods also known as the forsaken children of the Gods were able to kill a lot of Nascent Soul Cultivators and even some True Monarchs have fallen in their hands. 

Each Demi-God had different abilities depending on which New God they were related to, and their rapid increase in strength was due to their human side. This allowed them to grow rapidly after every battle.

As the battle grew even more intense the Descendants of the Strongest Mortal Soul sent some of the stronger members of their respective clans into the battlefield. 

Yet despite doing that the situation was not getting any better. Still, even now that the situation was worsening they could not send their most powerful members since those people were there just in case the New and Old Gods join in the chaos.