Genesis 11:14 Kabbalah

וְשֶׁ֥לַח חַ֖י שְׁלֹשִׁ֣ים שָׁנָ֑ה וַיּ֖וֹלֶד אֶת־עֵֽבֶר׃

And Shelah lived thirty years, and begot Eber.

Read kabbalistic (mystical) interpretation of Genesis 11:14: and classical mystical sources.