'By The Spirit' in the Bible

Now there was a man in the synagogue who was dominated by the spirit of an evil demon [Note: These "evil spirits" or "demons" were powerful beings sent by Satan to inhabit people, causing physical, mental and spiritual harm to them]. He was shouting with a loud voice,

For all of those who are led by the Spirit of God are the children of God.

For in [fellowship with] Him you people have been made [spiritually] rich in every way, through all [kinds of] speech and knowledge. [Note: This probably refers to the communication and comprehension of truth represented by the spiritual gifts of languages and revelation].