הִנֵּ֛ה שֶׁ֥בַע שָׁנִ֖ים בָּא֑וֹת שָׂבָ֥ע גָּד֖וֹל בְּכָל־אֶ֥רֶץ מִצְרָֽיִם׃
Behold, there come seven years of great plenty throughout all the land of Egypt.
Read kabbalistic (mystical) interpretation of Genesis 41:29: and classical mystical sources.