Evidence

Inward Fruit of the Spirit (Gal 5:22)

• Love/Charity: (affection or benevolence; charity, dear, love)
• Joy: (cheerfulness, calm delight:--gladness)
• Peace: (to join; by implication, prosperity:--one, peace, quietness, rest, + set at one again)
• Longsuffering: (longanimity, i.e. (objectively) forbearance or (subjectively) fortitude:--longsuffering, patience)
• Gentleness: (usefulness, i.e. morally, excellence (in character or demeanor), good(-ness), kindness)
• Goodness: (virtue or beneficence)
• Faith: (persuasion, i.e. credence; moral conviction (of religious truth, or the truthfulness of God or a religious teacher), especially reliance upon Christ for salvation; abstractly, constancy in such profession; by extension, the system of religious (Gospel) truth itself:--assurance, belief, believe, faith, fidelity)
• Meekness: (gentleness, by implication, humility)
• Temperence: (self-control, especially continence)

Outward

• Cloven tongues of Fire: ACT 2:3
• Other Tongues: ACT 2:4
• Preaching/testifying: ACT 4:8

He is...

• The comforter JOH 14:16

Definitions from Strong's Exhaustive Concordance.