Joy and happiness are not the same thing. Happiness rests on what is happening; joy rests on who God is.
8 verses · KJV
Then he said unto them, Go your way, eat the fat, and drink the sweet, and send portions unto them for whom nothing is prepared: for this day is holy unto our Lord: neither be ye sorry; for the joy of the LORD is your strength.
Thou wilt shew me the path of life: in thy presence is fulness of joy; at thy right hand there are pleasures for evermore.
These things have I spoken unto you, that my joy might remain in you, and that your joy might be full.
Now the God of hope fill you with all joy and peace in believing, that ye may abound in hope, through the power of the Holy Ghost.
For his anger endureth but a moment; in his favour is life: weeping may endure for a night, but joy cometh in the morning.
But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
My brethren, count it all joy when ye fall into divers temptations;
They that sow in tears shall reap in joy.