'Rejoice' in the Bible

Already the reaper is receiving his wages and he is gathering fruit for eternal life; so that he who plants and he who reaps may rejoice together.

I assure you and most solemnly say to you, that you will weep and grieve [in great mourning], but the world will rejoice. You will be sorrowful, but your sorrow will be turned into joy.

So for now you are in grief; but I will see you again, and [then] your hearts will rejoice, and no one will take away from you your [great] joy.