Genesis 41:32 explains that repetition in dreams confirms God's decree — similarly, the threefold vision underscores God's settled purpose.

2 Corinthians 13:1 cites the principle that every matter is established by two or three witnesses — the threefold vision confirms God's declaration.

Leviticus 7:19 commands not eating flesh that touches anything unclean — the very law God overturns in Peter's vision, declaring all clean.