In this, you should exult, if now, for a brief time, it is necessary to be made sorrowful by various trials
Other versions
King James Version
Wherein ye greatly rejoice, though now for a season, if need be, ye are in heaviness through manifold temptations:English Standard Version
In this you rejoice, though now for a little while, if necessary, you have been grieved by various trials,New International Version
In this you greatly rejoice, though now for a little while you may have had to suffer grief in all kinds of trials.