The law of the Lord is perfect, refreshing the soul.

 Psalm 19:1-14 

The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge. They have no speech, they use no words; no sound is heard from them.

The law of the Lord is perfect, refreshing the soul. The statutes of the Lord are trustworthy, making wise the simple. The precepts of the Lord are right, giving joy to the heart. The commands of the Lord are radiant, giving light to the eyes. The fear of the Lord is pure, enduring forever. The decrees of the Lord are firm, and all of them are righteous.

But who can discern their own errors? Forgive my hidden faults. Keep your servant also from willful sins; may they not rule over me. Then I will be blameless, innocent of great transgression. May these words of my mouth and this meditation of my heart be pleasing in your sight, Lord, my Rock and my Redeemer.

Why?

All of us are sinners, God speaks to us through all God created, no sound no speech but all reveal God's knowledge.

The law of the Lord is perfect, it can refresh our soul.

Fear the Lord may follow God's word in our daily life.

No one can discern their own errors, except walking in the light of the Lord. So psalmist pray to the Lord to forgive my hidden faults.

How?

Dear Lord forgive my hidden faults and the errors I did not discern, keep my heart pleasing in your sight. 

For who is God besides the Lord? And who is the Rock except our God?

 Psalm 18:1-50

The Lord is my rock, my fortress and my deliverer; my God is my rock, in whom I take refuge, my shield and the horn of my salvation, my stronghold. I called to the Lord, who is worthy of praise, and I have been saved from my enemies. The cords of death entangled me; the torrents of destruction overwhelmed me. The cords of the grave coiled around me; the snares of death confronted me.

To the faithful you show yourself faithful, to the blameless you show yourself blameless, to the pure you show yourself pure, but to the devious you show yourself shrewd. You save the humble but bring low those whose eyes are haughty. You, Lord, keep my lamp burning; my God turns my darkness into light. With your help I can advance against a troop; with my God I can scale a wall.

As for God, his way is perfect: The Lord’s word is flawless; he shields all who take refuge in him. For who is God besides the Lord? And who is the Rock except our God? It is God who arms me with strength and keeps my way secure. He makes my feet like the feet of a deer;  he causes me to stand on the heights. He trains my hands for battle; my arms can bend a bow of bronze. You make your saving help my shield, and your right hand sustains me; your help has made me great. You provide a broad path for my feet, so that my ankles do not give way.

He gives his king great victories; he shows unfailing love to his anointed, to David and to his descendants forever.

Why?

Who is God? God is my fortress and my deliverer. God is my rock. my Refuge, my shield and the horn of my salvation. God is "I am who I am"

How great is the unfailing love to his anointed.

How?

Knowing the Lord is my blessing, obeying God's word is my fortress and my rock.

Examine me at night and test me

 Psalm 17:1-15

Let my vindication come from you; may your eyes see what is right. Though you probe my heart,  though you examine me at night and test me, you will find that I have planned no evil; my mouth has not transgressed.

Though you probe my heart, though you examine me at night and test me, you will find that I have planned no evil; my mouth has not transgressed. Though people tried to bribe me, I have kept myself from the ways of the violent through what your lips have commanded. My steps have held to your paths; my feet have not stumbled.

I call on you, my God, for you will answer me; turn your ear to me and hear my prayer. Show me the wonders of your great love, you who save by your right hand those who take refuge in you from their foes. Keep me as the apple of your eye; hide me in the shadow of your wings.

Rise up, Lord, confront them, bring them down; with your sword rescue me from the wicked. By your hand save me from such people, Lord, from those of this world whose reward is in this life.

Why?

God tests me, probes me, and examines me. Though people tried to bribe me, this is a big testament to everyone. 

What I should do is my steps have held to your paths, my feet have not stumbled. This is to stand firm before the Lord in our daily life.

How?

The Lord is my refuge and my way to go, may I stand firm before the Lord in my daily life.

I keep my eyes always on the Lord. With him at my right hand, I will not be shaken.

 Psalm 16:1-11

I say to the Lord, “You are my Lord; apart from you I have no good thing.” I say of the holy people who are in the land, “They are the noble ones in whom is all my delight.” Those who run after other gods will suffer more and more. I will not pour out libations of blood to such gods or take up their names on my lips.

The boundary lines have fallen for me in pleasant places; surely I have a delightful inheritance.

I keep my eyes always on the Lord. With him at my right hand, I will not be shaken.

Therefore my heart is glad and my tongue rejoices; my body also will rest secure, because you will not abandon me to the realm of the dead, nor will you let your faithful one see decay. You make known to me the path of life; you will fill me with joy in your presence, with eternal pleasures at your right hand.

How?

You make known to me the path of life; you will fill me with joy in your presence, with eternal pleasures at your right hand. This is the best blessing in my life.

Lord, Who may live on your holy mountain?

Psalm 15:1-5

Lord, who may dwell in your sacred tent?  Who may live on your holy mountain?

The one whose walk is blameless, who does what is righteous, who speaks the truth from their heart; whose tongue utters no slander, who does no wrong to a neighbor, and casts no slur on others; who despises a vile person but honors those who fear the Lord; who keeps an oath even when it hurts, and does not change their mind; who lends money to the poor without interest; who does not accept a bribe against the innocent.

Whoever does these things will never be shaken.

Why?

Anyone who does as described above will never be shaken and may dwell in God's sacred tent.

1) personal behavior: walk blameless 3) distinguishing good and evil.

2)communication with others:  does no wrong to neighbor 4) Speak the truth and not cast a slur on others 5) Keep oath 6) Help the poor with money without interest 7) No accept a bribe against the innocent.

How?

Social behavior is more important than personal perspective. So I should walk out the good behavior before others to witness the righteousness and love of the Lord.

Do all these evildoers know nothing?

Psalm 14:1-7

The fool says in his heart, “There is no God.” They are corrupt, their deeds are vile; there is no one who does good.

The Lord looks down from heaven on all mankind to see if there are any who understand, any who seek God. All have turned away, all have become corrupt; there is no one who does good, not even one.

Do all these evildoers know nothing?

They devour my people as though eating bread; they never call on the Lord. But there they are, overwhelmed with dread, for God is present in the company of the righteous. You evildoers frustrate the plans of the poor, but the Lord is their refuge.

Oh, that salvation for Israel would come out of Zion! When the Lord restores his people,  let Jacob rejoice and Israel be glad!

Why?

All of the evil-doers say in their hearts "There is no God" They can do anything as they like.

All of us, no one is righteousness before the Lord. So the psalm says no one seeks God and all have turned away, for people like this world and living in the time now, the can't see the future.

Salvation for Israel came from Zion, and Jesus Christ came out from Zion.

How?

Jesus Christ is my savior, God is my way and my hope!

I trust in your unfailing love

Psalm 13:1-6

How long, Lord? Will you forget me forever? How long will you hide your face from me?
2 How long must I wrestle with my thoughts and day after day have sorrow in my heart? How long will my enemy triumph over me? Look on me and answer, Lord my God. Give light to my eyes, or I will sleep in death, and my enemy will say, “I have overcome him,” and my foes will rejoice when I fall. But I trust in your unfailing love; my heart rejoices in your salvation. I will sing the Lord’s praise, for he has been good to me.

Why?

Three "how long?" expressed the desire from the Lord.

The mind and heart changed for the psalmist has faith that the Lord has unfailing love. The Lord will save us when we call on Him.

How?

My God is good, his love endures forever. Praise to the Lord no matter good and worse for God reign forever.