'Careful' in the Bible

and so that the Lord will carry out His promise that He made to me: ‘If your sons are careful to walk faithfully before Me with their whole mind and heart, you will never fail to have a man on the throne of Israel.’

He followed in his father Asa's footsteps and was careful to do what the Lord approved. However, the high places were not eliminated; the people continued to offer sacrifices and burn incense on the high places.