I Chronicles 1:34 Kabbalah

וַיּ֥וֹלֶד אַבְרָהָ֖ם אֶת־יִצְחָ֑ק (ס) בְּנֵ֣י יִצְחָ֔ק עֵשָׂ֖ו וְיִשְׂרָאֵֽל׃ (ס)

And Abraham begot Isaac. The sons of Isaac: Esau, and Israel.

Read kabbalistic (mystical) interpretation of I Chronicles 1:34: and classical mystical sources.