Make a Joyful Shout to the LORD, All You Lands

As the title suggests, this is a psalm about thanksgiving. There is a few ways to express our thanksgiving beside saying thanks. These include worshiping with shouts, singing, praise and blessing His name. Or indirectly, thanks can be shown by serving God with gladness. Also the reason for thanks which we need to remind ourselves are:
- He is God
- we are His people
- He is good
- He is merciful
- His truth is unchanged.


Psalm 100
A Psalm of Thanksgiving.

 1 Make a joyful shout to the LORD, all you lands!
 2 Serve the LORD with gladness;
         Come before His presence with singing.
 3 Know that the LORD, He is God;
         It is He who has made us, and not we ourselves;[a]
         We are His people and the sheep of His pasture.
       
 4 Enter into His gates with thanksgiving,
         And into His courts with praise.
         Be thankful to Him, and bless His name.
 5 For the LORD is good;
         His mercy is everlasting,
         And His truth endures to all generations.

We Shall Be Satisfied with the Goodness of Your House

This psalm describes the Lord God who is the Provider. Spiritually, God provides for the atonement of our transgressions. The ones chosen by him can have satisfaction and contentment. He provides confidence and salvation.
For physical illustration, the psalm shows God as one who establishes the mountains, calms the seas and waves (as shown by Jesus), provides water for the earth and the grain and the pastures and valleys.


Psalm 65
To the Chief Musician. A Psalm of David. A Song.

 1 Praise is awaiting You, O God, in Zion;
         And to You the vow shall be performed.
 2 O You who hear prayer,
         To You all flesh will come.
 3 Iniquities prevail against me;
         As for our transgressions,
         You will provide atonement for them.
        
 4 Blessed is the man You choose,
         And cause to approach You,
         That he may dwell in Your courts.
         We shall be satisfied with the goodness of Your house,
         Of Your holy temple.
        
 5 By awesome deeds in righteousness You will answer us,
         O God of our salvation,
         You who are the confidence of all the ends of the earth,
         And of the far-off seas;
 6 Who established the mountains by His strength,
         Being clothed with power;
 7 You who still the noise of the seas,
         The noise of their waves,
         And the tumult of the peoples.
 8 They also who dwell in the farthest parts are afraid of Your signs;
         You make the outgoings of the morning and evening rejoice.
        
 9 You visit the earth and water it,
         You greatly enrich it;
         The river of God is full of water;
         You provide their grain,
         For so You have prepared it.
 10 You water its ridges abundantly,
         You settle its furrows;
         You make it soft with showers,
         You bless its growth.
        
 11 You crown the year with Your goodness,
         And Your paths drip with abundance.
 12 They drop on the pastures of the wilderness,
         And the little hills rejoice on every side.
 13 The pastures are clothed with flocks;
         The valleys also are covered with grain;
         They shout for joy, they also sing.