Strong's #570: apaistia (pronounced ap-is-tee'-ah)

from 571; faithlessness, i.e. (negatively) disbelief (lack of Christian faith), or (positively) unfaithfulness (disobedience):--unbelief.

Thayer's Greek Lexicon:

̓́

apistia

1) unfaithfulness, faithless

2) want of faith, unbelief

3) weakness of faith

Part of Speech: noun feminine

Relation: from G571

Citing in TDNT: 6:174, 849

Usage:

This word is used 12 times:

 

Matthew 13:58: "there because of their unbelief."
Matthew 17:20: "unto them, Because of your unbelief: for verily I say unto you,"
Mark 6:6: "he marveled because of their unbelief. And he went round about the"
Mark 9:24: "I believe; help thou mine unbelief."
Mark 16:14: "and upbraided them with their unbelief and hardness of heart, because they believed"
Romans 3:3: "some did not believe? shall their unbelief make the faith of God without effect?"
Romans 4:20: "the promise of God through unbelief; but was strong in faith, giving"
Romans 11:20: "Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded,"
Romans 11:23: "they also, if they abide not still in unbelief, shall be grafted in: for God"
1 Timothy 1:13: "I did it ignorantly in unbelief."
Hebrews 3:12: "of you an evil heart of unbelief, in departing from the living God."
Hebrews 3:19: "not enter in because of unbelief."