Mark 2:20

But the days will come
As they were in some sense now come to the disciples of John, their master being taken up by Herod, and confined in prison, and so it was a mourning time with them:

when the bridegroom shall be taken away from them, and then shall
they fast in those days:
referring to the time of the sufferings and death of Christ, which would be, and was a sorrowful season to his disciples.