Heavens and earth, be happy! Mountains, shout with joy! The LORD comforts his people. He is good to his poor people.— Isaiah 49:13
There is always a reason to be happy. Although the people of God may go through trying times, there is always a reason for joy. We live in a creation controlled by the Lord and He is good. If the ultimate source and origin of all things is good, if the providential sustainer of all things is good, then there is no reason to allow sorrow and sadness to overtake and overwhelm our lives.
Although the trials, troubles, and tribulations of life still cause us problems, we can experience the goodness of the Lord in the land of the living. The heavens and the earth have good reason to be happy and the mountains have good reason to shout for joy.
You may be going through a lot of trouble right now, but there is still good reason to be happy. The Lord is comforting you and being good to you, despite everything that is going on. This comfort and goodness is merely a foretaste of the comfort and goodness that is yet to be revealed to you.
And if you go outside and listen closely, you may be able to hear the mountains in the distance shouting for joy about you.