Psalm 132:9  "Let Thy priests be clothed with righteousness; And let thy godly ones sing for joy."
We shout for joy when we are in God's Presence.  We are in God's Presence when we come before Him in righteousness,  clothed with Jesus Christ, our Righteousness.   This psalm is Solomon's prayer.  He asks, based on the merit of his father David, for David's sake, for the covenant promises given to him.  We come, seeking God's Presence, to "worship at His footstool", for Jesus' sake. Matthew Henry says, "... Christ, the great anointed, who, in his intercession urges his designation to his office.  He is God's anointed, and therefore the Father hears him always."  Solomon prayed God's blessing over the temple.  We pray for God's blessings over the church.  Let our leaders lead with righteousness.  Let us sing aloud with great joy.  Amen!

Habakkuk sees the violence and wickedness around him and cries out to The Lord.  The Lord's answer is more than Habakkuk can handle, for the judgement is coming in the form of Babylon's armies.  Throughout this account though, Habakkuk clings to God and over and over he praises and worships Him.
1:12 "Art Thou not from everlasting, O Lord, my God, my Holy One? .... And Thou, O Rock, hast established them to correct."
13 "Thine eyes are too pure to approve evil, And Thou canst not look on wickedness with favor..."
2:14 "For the earth will be filled with the knowledge of the glory of The Lord, as the waters cover the sea." and v20 "But The Lord is in His holy temple. Let all the earth be silent before Him."
Chapter 3 is a prayer filled with worship.   The report about The Lord brings fear and Habakkuk appeals for The Lord's mercy.  "His splendor covers the heavens, and the earth is full of his praise. His radiance is like the sunlight; He has rays flashing from His hand, and there is the hiding of His power." God's ways are everlasting, His judgements are devastating, but His mercy is great!
The earth is cleaved, the mountains quake, the waters sweep by, the sun and moon freeze in their place, but it is God who is our salvation.  No matter what happens in the world around us, Habakkuk says, "Yet I will exult in The Lord, I will rejoice in the God of my salvation. The Lord God is my strength, And He has made my feet like hinds feet and makes me walk on my high places."
This prayer comes from a song of David, II Sam. 22.  Habakkuk goes back to the Word of God written before this time of crisis and stands on the Truth.    So must we!  In this day when wickedness seems to be rampant and we see war and devastation everywhere. When we are anxious about our political and cultural tendencies..... we must go back to the Word, to our God, our Holy One, who is our Rock and our Salvation. His judgement is fearful, but His mercy is great. Rejoice in Him!