「ソウルタイ（魂の結びつき）」は聖書的か？その言葉は聖書には存在しない

No. The phrase “soul tie” is not in the Bible. It is used mostly in modern deliverance ministry, which means by it for a spiritual bond said to form through sex or close relationships and to need breaking by prayer. The verses people cite speak of real bonds, but none asks for a tie to be broken. Still, the Bible knows what it is to be bound to someone. When David had finished speaking to Saul, “the soul of Jonathan…