Strong's G584 — ἀποδείκνυμι (verb)
apodeiknumi (ap-od-ike'-noo-mee) v.
1. to show off, i.e. exhibit
2. (figuratively) to demonstrate, i.e. accredit
[from G575 and G1166]
KJV: (ap-)prove, set forth, shew 
Root(s): G575, G1166 
Hebrew root: δεικνύω
Occurrences: 4