Strong's G1861 — ἐπαγγέλλω (verb)
epaggello (ep-ang-el'-lo) v.
1. to announce upon (reflexively)
2. (by implication) to engage to do something, to assert something respecting oneself
[from G1909 and the base of G32]
KJV: profess, (make) promise 
Root(s): G1909, G32 
Hebrew root: ἄγγελος
Occurrences: 15