διϊσχυρίζομαι G1340
diïschyrízomai · dee-is-khoo-rid'-zom-ahee · Verb
from διά and a derivative of ἰσχυρός; to stout it through, i.e. asservate:--confidently (constantly) affirm.
2 Occurrences in the King James Bible
Luke 22:59And about the space of one hour after another confidently affirmed, saying, Of a truth this fellow also was with him: for he is a Galilaean.
Acts 12:15And they said unto her, Thou art mad. But she constantly affirmed that it was even so. Then said they, It is his angel.