In Ezekiel 4, God is enlisting Ezekiel into proclaiming His message of destruction to Jerusalem. God begins telling Ezekiel the horrifying things that Ezekiel will have to do to proclaim this message. At a certain point God informs Ezekiel to cook his food with human waste, fecal matter. To this Ezekiel finally objects. Ezekiel’s objection is about being defiled:

Eze 4:12 And you shall eat it as barley cakes; and bake it using fuel of human waste in their sight.”
Eze 4:13 Then the LORD said, “So shall the children of Israel eat their defiled bread among the Gentiles, where I will drive them.”
Eze 4:14 So I said, “Ah, Lord GOD! Indeed I have never defiled myself from my youth till now; I have never eaten what died of itself or was torn by beasts, nor has abominable flesh ever come into my mouth.”
Eze 4:15 Then He said to me, “See, I am giving you cow dung instead of human waste, and you shall prepare your bread over it.”

The text reads like two individuals in normal conversation:

God: You will cook with human waste.
Ezekiel: God, that will defile me!
God: Ok, how about instead we use cow dung?

There is no indication that God thought Ezekiel would object. God changes His plans on the fly to accommodate His prophet’s objection. The Bible is written just like this throughout the text. Ancient Jews had no inclination of the classical attributes such as omnipresence and omniscience.