Ignoring it doesn't mean that the deity doesn't exist. If that deity truly decides to intervene, no one can stop it.
When Zhou Tian was surrounded by those forces, he could be said to have no ability to resist. At that moment, Zhou Tian let those forces easily defeat him. However, the fact that Zhou Tian couldn't resist those forces didn't mean that the deity lacked this ability as well.
In fact, since the deity that Zhou Tian released at that time was only sealed and not killed, it proves it possesses the ability to oppose the owner of that treasure sword. Although it's unclear how long it has been sealed or how much its power has been weakened during that time, if the original owner of the treasure sword was possibly a Divine King, it would naturally imply that the one coming to rescue Zhou Tian right now could also be a Divine King.
