To have sinful, fallen men living out of their vain imaginations is one thing, but to have men professing to be spiritual men seeing visions and dreams and spewing forth what they believe to be truth, but is really deceit, out of their vain imaginations is another.
Spiritual warfare is one example.
The apostate Church is gathering for war against principalities and powers and all who won't go along with the agenda. Because the word of God in its true context was forsaken and the vain imaginations of the heart took over to the point that these imaginations quenched their thirst to the point of spiritual drunkenness. 20 The LORD will not spare him, but then the anger of the LORD and his jealousy shall smoke against that man, and all the curses that are written in this book shall lie upon him, and the LORD shall blot out his name from under heaven. The last time I watched it, it was like demon-apes jumping around on stage. That's blasphemy, and its origin is in the vain imaginations of man that upping the beat of worship music will draw kids to church so they can be attracted to Jesus.