The evidence is interpretative hearing, giving us God's understanding. Called it that work in us not of us the "hearing of faith". Previously having no faith we now can hear .Having begun to understand God, God continhues to works in a person to the end by the same hearing of God's faith.
Faith previously having none is the gift that restores our souls by which we can believe God not seen, giving us a new spirit that could never die
Galatians 3:1-5 King James Version (KJV)O foolish Galatians, who hath bewitched you, that ye should not obey the truth, before whose eyes Jesus Christ hath been evidently set forth, crucified among you?This only would I learn of you, Received ye the Spirit by the works of the law, or by the hearing of faith?Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh?Have ye suffered so many things in vain? if it be yet in vain.He therefore that ministereth to you the Spirit, and worketh miracles among you, doeth he it by the works of the law, or by the hearing of faith?