'Kept' in the Bible

“From the days of your fathers you have turned aside from My statutes and have not kept them. Return to Me, and I will return to you,” says the Lord of hosts. “But you say, ‘How shall we return?’

You have said, ‘It is vain to serve God; and what profit is it that we have kept His charge, and that we have walked in mourning before the Lord of hosts?