Ps 8:3-9
3 When I consider your heavens, the work of your fingers, the moon and the stars, which you have set in place, 4 what is man that you are mindful of him, the son of man that you care for him? 5 You made him a little lower than the heavenly beings and crowned him with glory and honor. 6 You made him ruler over the works of your hands; you put everything under his feet: 7 all flocks and herds, and the beasts of the field, 8 the birds of the air, and the fish of the sea, all that swim the paths of the seas. 9 O LORD, our Lord, how majestic is your name in all the earth!

Ps 8:1-2
1 LORD, our Lord, how majestic is your name in all the earth! You have set your glory above the heavens. 2 From the lips of children and infants you have ordained praise because of your enemies, to silence the foe and the avenger.

Ps 7:14-17
14 He who is pregnant with evil and conceives trouble gives birth to disillusionment. 15 He who digs a hole and scoops it out falls into the pit he has made. 16 The trouble he causes recoils on himself; his violence comes down on his own head. 17 I will give thanks to the LORD because of his righteousness and will sing praise to the name of the LORD Most High.

As long as I can remember I have heard the saying that what goes around comes around. While these words are not in the Bible, the thought is expressed by the principle that we reap what we sow. The spiritual application is made by Paul when he tells us that we can either sow to the Spirit and reap spiritual rewards or we can sow to the flesh and reap punishment.

Ps 7:10-13
10 My shield is God Most High, who saves the upright in heart. 11 God is a righteous judge, a God who expresses his wrath every day. 12 If he does not relent, he will sharpen his sword; he will bend and string his bow. 13 He has prepared his deadly weapons; he makes ready his flaming arrows.

Ps 7:6-9
6 Arise, O LORD, in your anger; rise up against the rage of my enemies. Awake, my God; decree justice. 7 Let the assembled peoples gather around you. Rule over them from on high; 8 let the LORD judge the peoples. Judge me, O LORD, according to my righteousness, according to my integrity, O Most High. 9 O righteous God, who searches minds and hearts, bring to an end the violence of the wicked and make the righteous secure.

Ps 7:1-5
1 LORD my God, I take refuge in you; save and deliver me from all who pursue me, 2 or they will tear me like a lion and rip me to pieces with no one to rescue me. 3 O LORD my God, if I have done this and there is guilt on my hands--4 if I have done evil to him who is at peace with me or without cause have robbed my foe--5 then let my enemy pursue and overtake me; let him trample my life to the ground and make me sleep in the dust. Selah