why did God command Daniel and John not to write some events in the visions they saw?

There are two events in the Bible where God orders the servant not to write some of the events they saw in the visions they were given. Daniel in the Old Testament and John in the new testament, Daniel is ordered to shut up the words until the time of the end. *Daniel 12:3* >But you, Daniel, roll up and seal the words of the scroll until the time of the end. Many will go here and there to increase knowledge. In the New Testament, John the revelator hears some shocking things and is ordered not to write those things. *Revelation 10:4* >And when the seven thunders had sounded, I was about to write, but I heard a voice from heaven saying, 'Seal up what the seven thunders have said, and do not write it down' What could have been the reason why Daniel and John were ordered not to write these things? Were they so shocking as to affect our faith and hope?