It also says "ruler of the air" too. Let's look at Ephesians 2:2 in KJV:
2Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:
So who is the prince of the power of the air? Who is the god of this world?
2 Corinthians 4:4
4In whom the god of this world hath blinded the minds of them which believe not, lest the light of the glorious gospel of Christ, who is the image of God, should shine unto them.
Disobedience is recting the glorious gospel of Christ.
It's directly related to the parable of the sower as explained by Jesus:
Matthew 13:19
19When any one heareth the word of the kingdom, and understandeth
it not, then cometh the wicked
one, and catcheth away that which was sown in his heart. This is he which received seed by the way side.
Notice how in all of these verses there is an evil entity trying to prevent people from being obedient to the gospel of Christ?