'Deceitful' in the Bible

Do not trust in {the deceitful words}, {saying}, 'The temple of Yahweh, the temple of Yahweh, they [are] the temple of Yahweh.'

Look, you [are] relying for yourselves on {deceitful words} without benefiting.

Why is my pain endless, and my wound incurable? It refuses to become healed. Truly you are to me like a deceitful [brook], waters [that] are not trustworthy.

The heart [is] deceitful more than anything else, and it [is] disastrous. Who can understand it?