'Efforts' in the Bible

Bless, O Lord, his goods, and be pleased with his efforts; undercut the legs of any who attack him, and of those who hate him, so that they cannot stand.

May the Lord reward your efforts! May your acts of kindness be repaid fully by the Lord God of Israel, from whom you have sought protection!"

Would your wealth sustain you, so that you would not be in distress, even all your mighty efforts?

then I discerned all that God has done: No one really comprehends what happens on earth. Despite all human efforts to discover it, no one can ever grasp it. Even if a wise person claimed that he understood, he would not really comprehend it.

Be sure of this! The Lord who commands armies has decreed: The nations' efforts will go up in smoke; their exhausting work will be for nothing.