their heart

Psalm 119:80
May my heart be blameless in Your statutes, that I may not be put to shame.

Hosea 7:14, 16
They do not cry out to Me from their hearts when they wail upon their beds. They slash themselves for grain and new wine, but turn away from Me. . . .

Hosea 10:2
Their hearts are devious; now they must bear their guilt. The LORD will break down their altars and demolish their sacred pillars.

Acts 8:21
You have no part or share in our ministry, because your heart is not right before God.

stedfast

Psalm 78:8
Then they will not be like their fathers, a stubborn and rebellious generation, whose heart was not loyal, whose spirit was not faithful to God.

Psalm 44:17, 18
All this has come upon us, though we have not forgotten You or betrayed Your covenant. . . .

Deuteronomy 31:20
When I have brought them into the land I swore to give their fathers, a land flowing with milk and honey, they will eat their fill and prosper. Then they will turn to other gods and worship them, and they will reject Me and break My covenant.

Hosea 8:1
Put the trumpet to your lips! An eagle comes against the house of the LORD, because they have transgressed My covenant and rebelled against My law.