'Mind' in the Bible

I thought deeply about the effects of indulging myself with wine (all the while my mind was guiding me with wisdom) and the effects of behaving foolishly, so that I might discover what is profitable for people to do on earth during the few days of their lives.

For all day long his work produces pain and frustration, and even at night his mind cannot relax! This also is futile!

While applying my mind to everything that happens in this world, I have seen all this: Sometimes one person dominates other people to their harm.

Banish emotional stress from your mind. and put away pain from your body; for youth and the prime of life are fleeting.