'Sphere' in the Bible

so that we may preach the gospel even in the lands beyond you, but not to boast in work already accomplished in another one’s field of activity.

And He raised us up together with Him [when we believed], and seated us with Him in the heavenly places, [because we are] in Christ Jesus,

So now through the church the multifaceted wisdom of God [in all its countless aspects] might now be made known [revealing the mystery] to the [angelic] rulers and authorities in the heavenly places.

For our struggle is not against flesh and blood [contending only with physical opponents], but against the rulers, against the powers, against the world forces of this [present] darkness, against the spiritual forces of wickedness in the heavenly (supernatural) places.