'Selves' in the Bible

Nay, we had, as we still have, the sentence of death within our own selves, in order that our confidence may repose, not on ourselves, but on God who raised the dead to life.

They not only did this, as we had expected, but first of all in obedience to God's will they gave their own selves to the Lord and to us.

Test yourselves to discover whether you are true believers: put your own selves under examination. Or do you not know that Jesus Christ is within you, unless you are insincere?