Strong's G1340 — διϊσχυρίζομαι (verb)
diischurizomai (dee-is"-khoo-rid'-zom-ai) v.
1. to declare or affirm earnestly, to asseverate
[from G1223 and a derivative of G2478]
KJV: confidently (constantly) affirm 
Root(s): G1223, G2478 
Hebrew root: ἰσχυρός
Occurrences: 2