Bible Verses About Joy: Saints should have, in all their undertakings

Thy words were found, and I did eat them; and thy word was unto me the joy and rejoicing of mine heart: for I am called by thy name, O LORD God of hosts.

But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,

These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.

Therefore I take pleasure in infirmities, in reproaches, in necessities, in persecutions, in distresses for Christ's sake: for when I am weak, then am I strong.

My brethren, count it all joy when ye fall into divers temptations;