Psalms 78:37

For their heart was not right with him, neither were they stedfast in his covenant.

Their heart was not steadfast toward him; they were not faithful to his covenant.

וְלִבָּ֥ם לֹא אֵית֑וֹ וְלֹ֥א נֶ֝אֶמְנ֗וּ בִּבְרִיתֽוֹ׃

vlibam loʾ ʾeytvo vloʾ neʾemnv bibriytvo