The God Emperor had been having a bad premonition these past few days for no particular reason.
He found it strange since he doesn't really remember doing anything that should've made him feel this way...except of course the fact that he's hunting down the location of the Divine Realm, but that couldn't have been the reason right?
There's no way that he would be this alarmed just because he decided to deal with puny humans, they're weak and undeserving of such providence, what he's doing is something in the likes of taking a toy from a baby.
Humans are way too weak to even put a dent to their defenses so they can't be the reason why he's having this bad premonitions.
If he's going to venture a guess, it should be coming from the pesky things that have been harassing his fodders, yes that makes more sense to him.