I Chronicles 1:31 Kabbalah

יְט֥וּר נָפִ֖ישׁ וָקֵ֑דְמָה אֵ֥לֶּה הֵ֖ם בְּנֵ֥י יִשְׁמָעֵֽאל׃ (ס)

Jetur, Naphish, and Kedem. These are the sons of Ishmael.

Read kabbalistic (mystical) interpretation of I Chronicles 1:31: and classical mystical sources.