their heart
Psalm 119:80
Let my heart be sound in thy statutes; that I be not ashamed.
Hosea 7:14
And they have not cried unto me with their heart, when they howled upon their beds: they assemble themselves for corn and wine, and they rebel against me.
Hosea 7:16
They return, but not to the most High: they are like a deceitful bow: their princes shall fall by the sword for the rage of their tongue: this shall be their derision in the land of Egypt.
Hosea 10:2
Their heart is divided; now shall they be found faulty: he shall break down their altars, he shall spoil their images.
Acts 8:21
Thou hast neither part nor lot in this matter: for thy heart is not right in the sight of God.
stedfast
Psalm 78:8
And might not be as their fathers, a stubborn and rebellious generation; a generation that set not their heart aright, and whose spirit was not stedfast with God.
Psalm 44:17
All this is come upon us; yet have we not forgotten thee, neither have we dealt falsely in thy covenant.
Psalm 44:18
Our heart is not turned back, neither have our steps declined from thy way;
Deuteronomy 31:20
For when I shall have brought them into the land which I sware unto their fathers, that floweth with milk and honey; and they shall have eaten and filled themselves, and waxen fat; then will they turn unto other gods, and serve them, and provoke me, and break my covenant.
Hosea 8:1
Set the trumpet to thy mouth. He shall come as an eagle against the house of the LORD, because they have transgressed my covenant, and trespassed against my law.