The Book of Hebrews

Hebrews 9:27-28
And as it is appointed unto men once to die, but after the judgment: So Christ was once offered to bear the sins of many; and unto them that look for Him shall He appear the second time without sin unto salvation.

Hebrews 11:1
Now faith is the substance of things hoped for, the evidence of things not seen.

Hebrews 11:3
Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.