And what am I to do?
What in the world am I to say?
There's nothing else to do...
I rejoice
For his anger lasts only a moment... weeping may stay for the night, but rejoicing comes in the morning.... To you, Lord... I cried for mercy: “What is gained if I am silenced, if I go down to the pit?”.... You turned my wailing into dancing... that my heart may sing your praises and not be silent. Psalm 30:5-12 NIV
He says he'll change the world some day
I rejoice
Jesus: “Now is your time of grief, but I will see you again and you will rejoice, and no one will take away your joy.” John 16:22 NIV see also 14:3

The Lord says: “See, I will create new heavens and a new earth... But be glad and rejoice forever in what I will create… I will rejoice over Jerusalem and take delight in my people; the sound of weeping and of crying will be heard in it no more.” Isaiah 65:17-19
I rejoice
Rejoice in the Lord always. I will say it again: Rejoice! Philippians 4:4 NIV see also Psalms 5:11, 9:2, 13:5, 28:7, 33:21, 35:9

I rejoice in your promise, like someone on finding a vast treasure. Psalm 119:162 PHILLIPS see also 119:14

I will sing to the Lord all my life; I will sing praise to my God as long as I live. May my meditation be pleasing to him, as I rejoice in the Lord. Psalm 104:33-34 NIV