Revelation 19:11 And I saw heaven opened, and behold
a white horse; and he that sat upon him was called
Faithful and True, and in righteousness he doth judge
and make war.
That it is similar to:
Matthew 3:16 And Jesus, when he was
baptized, went up straightway out of the water: and, lo, the heavens were opened unto him,
and he saw the Spirit of God descending like a dove, and
lighting upon him:
John 1:51 And he saith unto him,
Verily, verily, I say unto you, Hereafter ye shall see heaven open, and the
angels of God ascending and descending upon the Son of
man.
Acts 10:11 And saw heaven opened, and a certain
vessel descending unto him, as it had been a great sheet
knit at the four corners, and let down to the earth:
Ezekiel 1:1 Now it came to pass in the
thirtieth year, in the fourth month, in the fifth day of
the month, as I was among the captives by the river of
Chebar, that the heavens were opened,
and I saw visions of God.
or even like:
Genesis 7:11 ¶ In the six hundredth
year of Noah’s life, in the second month, the
seventeenth day of the month, the same day were all the
fountains of the great deep broken up, and the windows of heaven were opened.
Revelation 4:1 After this I looked,
and, behold, a door was opened in heaven:
and the first voice which I heard was as it were of a
trumpet talking with me; which said, Come up hither, and
I will shew thee things which must be hereafter.