The meaning of Open in the Bible
(From International Standard Bible Encyclopedia)

o'-p'-n: In the Old Testament represents chiefly pathach, but also other words, as galah, "to uncover"; of the opening of the eyes in vision, etc. (thus Balaam, Numbers 22:31; Numbers 24:4; compare Job 33:16; Job 36:10; Psalms 119:18; Jeremiah 32:11, Jeremiah 32:14). In the New Testament the usual word is anoigo (of opening of mouth, eyes, heavens, doors, etc.). A peculiar word, trachelizomai (literally, to have the neck bent back, to be laid bare), is used for "laid open" before God in Hebrews 4:13.

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