Psalm 16

 1Keep me safe, my God,for in you I take refuge.

2I say to the Lord, “You are my Lord;

apart from you I have no good thing.”

3I say of the holy people who are in the land,

“They are the noble ones in whom is all my delight.”

4Those 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.

5Lord, you alone are my portion and my cup;

you make my lot secure.

6The boundary lines have fallen for me in pleasant places;

surely I have a delightful inheritance.

7I will praise the Lord, who counsels me;

even at night my heart instructs me.

8I keep my eyes always on the Lord.

With him at my right hand, I will not be shaken.

9Therefore my heart is glad and my tongue rejoices;

my body also will rest secure,

10because you will not abandon me to the realm of the dead,

nor will you let your faithful ^b one see decay.

11You make known to me the path of life;

you will fill me with joy in your presence,

with eternal pleasures at your right hand.
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Thoughts: This is a prayer and then assurance after that it will be answered.  
This also is a praise of putting all our eggs in God's basket so to speak.  He is our refuge, our Lord, our only good thing, our reason for not suffering, my portion, my cup, my security, the reason for my blessings/inheritance, our counsel, our night teacher, our immediate/powerful help (right hand), the reason for my gladness, the reason my body is at peace, my refuge even in the face of death, my path to life, my eternal joy and pleasure.  
So this too is a missionary Psalm.  It is a listing of the many blessings of God- as a testimony to the world of the benefits of believing in God.  
The writing here is stunning- the idea of blessing as "the boundary lines have fallen in pleasant places".  In imploring for us to follow his example of keeping his eyes always on the Lord. God does not abandon us to the dead, but lifts us up.  There are scholars who box the Old Testament in as if no one believed in eternal life until the time of Jesus- but this is just not true.  God, however, not nature- is the giver of eternal life.  Eternal life is not something just natural- God enables us to not see decay.  This passage was quoted about Jesus later.  But it is a cause to tell others now- we can abandon decay to follow the living God.  

Prayer: Lord be my refuge, and my source of hope and life.