Jesus was brutally honest with the disciples as He prepared them for His death. He knew they would weep and mourn while the world rejoiced. His death did indeed cause great sorrow for the disciples while much of the known world rejoiced that He was out of the way.
Of course, no one knew about Sunday morning. On that day, the disciples’ grief turned into joy when they saw their risen Lord. Jesus had told them this was coming, and it did! He also said no one would take away their joy; it would be enduring because now they would see the cross in all its glory (Galatians 6:14). It would also be complete because now they would pray to the Father in Jesus’ name. From then on they would make requests of God based on the person, work and will of Jesus. As God answers these prayers, their joy would be as full as it could be.
The source of real and enduring joy for you and me comes from the glorious work of Jesus on the cross. So ask in His name, receive His answers, and rejoice as your joy is made complete.