'Maintain' in the Bible

Then hear thou in heaven their prayer and their supplication, and maintain their cause.

Then hear thou their prayer and their supplication in heaven thy dwelling place, and maintain their cause,

And let these my words, wherewith I have made supplication before the LORD, be nigh unto the LORD our God day and night, that he maintain the cause of his servant, and the cause of his people Israel at all times, as the matter shall require: