Answering my question...
I think mind games are the antithesis of Christ’s teachings and the love we are called to have and share. Its deeply grievous when Christians use these methods to coerce or manipulate others. And far worse when God is used as a point of entry for their deception.
On a personal level, I find the behavior repugnant. I value truth and authenticity. I view it as an ethical violation that knows no bounds and comprises the welfare of others for selfish gain.
It is wholly demonic. While the root of its presence may differ, it should not be welcomed. Whether the behavior is overt, cunning, or passive aggressive; we should seek its removal.
As others have mentioned, this can lead to other maladies. Both natural and physical. But those endowed with the Holy Spirit will sense discrepancies within their spirit and the person they’re engaging with.
The bible tells us:
For nothing is hidden that will not be made manifest, nor is anything secret that will not be known and come to light.
Nothing is covered up that will not be revealed, or hidden that will not be known.
The truth cannot be hidden and will eventually come to light. Whether we’re on the receiving end or perpetuate the same.
You cannot walk in unforgiveness and bitterness and assume no one sees. You can’t behave with cunning and passive aggressiveness and assume no one notices.
God sees and knows all.
I think the first remedy is prayer. We need the Holy Spirit’s wisdom and counsel. In some cases, that is enough. Others may require spiritual warfare to remedy.
In most instances, distance coupled with prayer is the ideal solution. But close relationships may prove challenging. Nevertheless, we cannot support discord or exploitation. Lest we find ourselves equally compromised by the experience.
It is my belief that someone operating in God’s love and in harmony with His Spirit cannot consistently behave manipulatively without remorse or conviction.
And without a willingness to confront their behavior in true repentance towards those they’ve harmed. I‘d liken them to the man with 1,000 faces and assume I’m viewing another guise.
Manipulators are personable. They say the right things and many are well liked. But they don’t walk in love. That’s the difference and one we should not forget.