Albert Barnes on John 16:22

I will see you again. After my resurrection.

Your joy no man taketh from you. You shall be so firmly persuaded that I have risen and that I am the Messiah, that neither the threats nor persecutions of men shall ever be able to shake your faith and produce doubt or unbelief, and thus take away your joy. This prediction was remarkably fulfilled. It is evident that after his ascension not one of the apostles ever doubted for a moment that he had risen from the dead. No persecution or trial was able to shake their faith; and thus, amid all their afflictions, they had an unshaken source of joy.

(q) "you now therefore have sorrow" Jn 16:6 (r) "But I shall see you again" Lk 24:41,52, Jn 20:20 (s) "and your joy" 1Pet 1:8