Psalms 9 & 10 - God, refuge of the oppressed

"The Lord is a rampart for the oppressed, a refuge in times of distress."

"Those who cherish your name, O Lord, can rely on you,

for you have never forsaken those who look to you." 

"For the needy will not always be forgotten,

nor the hope of the poor perish forever."

Psalm 8 - Glory of God and Dignity of Humans

... eager to enjoy life at the level of their fortune and good health.

Psalm 7 - Free Me from My Persecutors

A cry that comes from the depth of the soul, demanding justice.

"Look at the one who conceived iniquity and is pregnant with mischief; miscarriage will result."

"His evil intent recoils upon his head; his wicked designs comes back in his face."

"I will rejoice in the Lord for his justice, and sing to the Most High in gratitude and praise."

http://www.opendoorsyouth.org/article/three-reasons-why-im-praying-for-the-persecutors/

Psalm 6 - Prayer of the Afflicted

... plaintive voice.