142:5 When David had prayed to the Lord he had expressed confidence that the Lord would defend him. God was his portion or allotment, all that he had.
142:6-7 Again the psalmist begged God to help him escape from his overpowering enemies. He felt imprisoned with no escape possible if God failed to save him. If God did deliver him he would thank the Lord, and other godly people would join David in his praise because of God's abundant goodness.
When God's people feel forsaken by all other human allies we may turn to the Lord who is always with the righteous. God is able to deliver His own even if there are no other helpers.