In Psalms 13, 63, & 113, David clearly expresses his need for his God and Savior, that it is only in him that deliverance comes.  In Psalm 113, he praises God and expresses his thankfulness for his goodness.

Psalm 13

1 How long, LORD?
Will you forget me forever?
How long will you hide your face from me?
2 How long shall I take counsel in my soul,
having sorrow in my heart every day?
How long shall my enemy triumph over me?
3 Behold, and answer me, LORD, my God.
Give light to my eyes, lest I sleep in death;
4 lest my enemy say, “I have prevailed against him;”
lest my adversaries rejoice when I fall.

5 But I trust in your loving kindness.
My heart rejoices in your salvation.
6 I will sing to the LORD,
because he has been good to me.

Psalm 63

1 God, you are my God.
I will earnestly seek you.
My soul thirsts for you.
My flesh longs for you,
in a dry and weary land, where there is no water.
2 So I have seen you in the sanctuary,
watching your power and your glory.
3 Because your loving kindness is better than life,
my lips shall praise you.
4 So I will bless you while I live.
I will lift up my hands in your name.
5 My soul shall be satisfied as with the richest food.
My mouth shall praise you with joyful lips,
6 when I remember you on my bed,
and think about you in the night watches.
7 For you have been my help.
I will rejoice in the shadow of your wings.
8 My soul stays close to you.
Your right hand holds me up.
9 But those who seek my soul, to destroy it,
shall go into the lower parts of the earth.
10 They shall be given over to the power of the sword.
They shall be jackal food.
11 But the king shall rejoice in God.
Everyone who swears by him will praise him,
for the mouth of those who speak lies shall be silenced.

Psalm 113

1 Praise the LORD!
Praise, you servants of the LORD,
praise the LORD’s name.
2 Blessed be the LORD’s name,
from this time forward and forever more.
3 From the rising of the sun to the going down of the same,
The LORD’s name is to be praised.
4 The LORD is high above all nations,
his glory above the heavens.
5 Who is like the LORD, our God,
who has his seat on high,
6 Who stoops down to see in heaven and in the earth?
7 He raises up the poor out of the dust.
Lifts up the needy from the ash heap;
8 that he may set him with princes,
even with the princes of his people.
9 He settles the barren woman in her home,
as a joyful mother of children.
Praise the LORD!

Passages from the World Messianic Bible