Be put ot shame and confusion

Psalm 71:1-24
In you, Lord, I have taken refuge; let me never be put to shame.
May my accusers perish in shame; may those who want to harm me be covered with scorn and disgrace.
My tongue will tell of your righteous acts all day long, for those who wanted to harm me have been put to shame and confusion
Even when I am old and gray, do not forsake me, my God, till I declare your power to the next generation, your mighty acts to all who are to come.
For you have been my hope, Sovereign Lord, my confidence
Shame: A painful emotion caused by the awareness of having done something wrong or foolish.
             A condition of disgrace or dishonor; ignominy: 
Confidence: A belief or conviction that an outcome will be favorable. Belief in the certainty of something:
At the end of a long and troubled life there is still no let-up. But trouble has schooled the psalmist in trust.
Nothing can make him despair. As long as God is with him, the future is full of hope.
Why?
Let me won't be put to shame, but prayed my accusers perish in shame, let them be put to shame and confusion. Psalmist did not prayed to the Lord let his enemies to be dead, but be put to shame. Let them regret and sorrow to what they have done, it is better than put them to dead.
When I am getting old and gray, I will declare God's power and love.
How?
I will tell your righteous act all day long and declare your power to next generation.