Strong's G4796 — συγχαίρω (verb)
sugchairo (soong-khai'-ro) v.
1. to sympathize in gladness, congratulate
[from G4862 and G5463]
KJV: rejoice in (with) 
Root(s): G4862, G5463 
Hebrew root: χαίρω
Occurrences: 7