A seven letter word containing thousands of letters - a mailbox.
The word mailbox has 7 letters, and it contains thousands of letters - just not the letters from the alphabet, but rather a form of a paper message.
Heaven is a place of eternal joy, light, and leisure. This is the theme of the poem "Heaven" written by George Herbert. In this poem, the speaker is actually a man who is living on this Earth. This focuses on the man's way to heaven's door and that the only mediator between him and God is Jesus Christ
The answer is C..... good luck with everything!