Psalm 95:10 Forty years long was I grieved with this generation, And said, It is a people that do err in their heart, And they have not known my ways:
God wanted His people to love Him and to serve Him. He did not want them to wander off from Him. He did not want them to disobey Him. They chose to seek other gods. They chose to rebel against Him.
Notice several things, God was grieved. That is clear enough. He hurt because of what they did. This was not His doing but theirs. What they did hurt Him. They hurt Him.
They erred in their heart. This peopled erred in their heart. It is the people that do err in their heart. It is the people.
They did not know His ways. They had heard. They simply chose not to know. They do not walk in His ways.
Let’s be clear. This psalm says the people made a choice to not do what God wanted and it hurt Him. He was grieved. They did it. He hurt.