unbelief

Lack of belief or faith, especially in religious matters.

Incredulity; the withholding of belief; disbelief; especially, disbelief of divine revelation.

Disbelief of the truth of the gospel; distrust of God’s promises and faithfulness, etc. Mat. xiii. 58; Mark vi. 6; Heb. iii. 12.

The withholding of belief; doubt; incredulity; skepticism.

Disbelief; especially, disbelief of divine revelation, or in a divine providence or scheme of redemption.

An absence (or rejection) of belief, especially religious belief

a rejection of belief