2 Corinthians 13:5:

Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates?

See also:

Objection: Healing Cannot Be in the Atonement Because Healing Can Be Lost, but Salvation Cannot Be Lost
Objection: We Don’t Have to Keep Getting Saved the Way We Have to Keep Getting Healed, So Healing Can’t Be in the Atonement