New Revised Standard Version
The vision of all this has become for you like the words of a sealed document. If it is given to those who can read, with the command, “Read this,” they say, “We cannot, for it is sealed.”

Contemporary English Version
Now his message is like a sealed letter to you. Some of you say, "We can't read it, because it's sealed."

New American Bible
For you the vision of all this has become like the words of a sealed scroll. When it is handed to one who can read, with the request, “Read this,” the reply is, “I cannot, because it is sealed.”

Douay-Rheims Bible
And the vision of all shall be unto you as the words of a book that is sealed which when they shall deliver to one that is learned, they shall say: Read this: and he shall answer: I cannot, for it is sealed.

And the vision of all shall be unto you as the words of a book that is sealed which when they shall deliver to one that is learned, they shall say: Read this: and he shall answer: I cannot, for it is sealed.

book.

Isaiah 8:16 Bind up the testimony, seal the law among my disciples.

I cannot

Daniel 12:4,9 But thou, O Daniel, shut up the words, and seal the book, even to the time appointed: many shall pass over, and knowledge shall be manifold. . . .

Matthew 11:25 At that time Jesus answered and said: I confess to thee, O Father, Lord of Heaven and earth, because thou hast hid these things from the wise and prudent, and hast revealed them to little ones.

Matthew 13:11 Who answered and said to them: Because to you it is given to know the mysteries of the kingdom of heaven: but to them it is not given.

Matthew 16:17 And Jesus answering said to him: Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven.

Revelation 5:1-9 And I saw, in the right hand of him that sat on the throne, a book, written within and without, sealed with seven seals. . . .

Revelation 6:1 And I saw that the Lamb had opened one of the seven seals: and I heard one of the four living creatures, as it were the voice of thunder, saying: Come and see.