Greek Word Study
G570
ἀπιστία
apistía
G570 · Greek
Unbelief, faithlessness. Apistia. He could not do many miracles there because of their unbelief. Unbelief is not intellectual. It is a closed will not an open question.
Verses with this word
Mark 9:24
“And straightway the father of the child cried out, and said with tears, Lord, I believe; help thou mine unbelief.”