In the level of battle Zhou Tian was facing, his subordinates, the Deities, on the surface seemed to be of little help. But even if those Deities seemed to have little effect, actually being in that environment, Zhou Tian could not afford to let those Divine Kings slaughter his subordinate Deities.
The reason is very simple, because his situation at the time had determined that Zhou Tian must have the support of certain Deities for his fight. Otherwise, relying on his own strength, Zhou Tian could not only not counterattack, but even protecting himself would be difficult.
If Zhou Tian wanted to confront the Divine Kings, he first had to rely on the strength of the Divine Emperor's Treasure, and secondly required certain True Gods to support him.
It can be said, whether missing the strength of the Divine Emperor's Treasure or lacking the help of those True Gods, under the current cultivation level of Zhou Tian it would be impossible to confront those Divine Kings.
