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19 And the evening and the morning were the fourth day.
'To open,' as in Revelation 9, signifies communication and conjunction.
(References: Apocalypse Explained 537)
13 It happened in the six hundred first year, in the first month, the first day of the month, the waters were dried up from the earth. Noah removed the covering of the ship, and looked. He saw that the surface of the ground was dried.