'Lack' in the Bible

For thus says the Lord, ‘David shall never lack a man to sit on the throne of the house of Israel;

and the Levitical priests shall never lack a man before Me to offer burnt offerings, to burn grain offerings and to prepare sacrifices continually.’”

therefore thus says the Lord of hosts, the God of Israel, “Jonadab the son of Rechab shall not lack a man to stand before Me always.”’”