Seven Bible verses about joy — the kind that holds when nothing has improved yet, and the kind that turns out to be strength.

Joy in the Bible is not the same as being cheerful. It survives bad news, which happiness generally does not, and scripture keeps attaching it to strength rather than to circumstances.
These seven verses include the one about a failed harvest and the one about a body healing. Together they describe joy as something you can choose on a day that has not earned it.

“The joy of the Lord is your strength.” — Nehemiah 8:10

“Delight yourself in the Lord and he will give you the desires of your heart.” — Psalm 37:4

“This is the day that the Lord has made; let us rejoice and be glad in it.” — Psalm 118:24

“Yet I will rejoice in the Lord; I will take joy in the God of my salvation.” — Habakkuk 3:18

“For you shall go out in joy and be led forth in peace; the mountains and the hills before you shall break forth into singing, and all the trees of the field shall clap their hands.” — Isaiah 55:12

“A joyful heart is good medicine, but a crushed spirit dries up the bones.” — Proverbs 17:22

“Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full.” — John 16:24
Happiness tracks your circumstances; joy does not have to. Habakkuk 3:18 is the test case — the crops have failed and the rejoicing continues anyway, because its source is God rather than the harvest.
Nehemiah 8:10 flips the usual order. Joy is not the reward you get once you are strong enough; it is the thing that makes you strong, which is why it is spoken to people who were weeping.
Proverbs 17:22 — a joyful heart is good medicine, and a crushed spirit dries up the bones. Scripture noticed the body-and-mood link a long time before anyone measured it.
Psalm 118:24 makes it a decision about one day rather than a whole outlook, and Psalm 37:4 puts delight before the desires — the order in that verse is the instruction.