'Souls' in the Bible

Then those who gave hearing to his words had baptism: and about three thousand souls were joined to them that day.

Making strong the souls of the disciples, saying to them that they were to keep the faith, and that we have to go through troubles of all sorts to come into the kingdom of God.

Because we have knowledge that some who went from us have been troubling you with their words, putting your souls in doubt; to whom we gave no such order;