I Chronicles 4:17 Kabbalah

וּבֶן־עֶזְרָ֔ה יֶ֥תֶר וּמֶ֖רֶד וְעֵ֣פֶר וְיָל֑וֹן וַתַּ֙הַר֙ אֶת־מִרְיָ֣ם וְאֶת־שַׁמַּ֔י וְאֶת־יִשְׁבָּ֖ח אֲבִ֥י אֶשְׁתְּמֹֽעַ׃

And the sons of Ezrah: Jether, and Mered, and Epher, and Jalon. And she bore Miriam, and Shammai, and Ishbah the father of Eshtemoa—

Read kabbalistic (mystical) interpretation of I Chronicles 4:17: and classical mystical sources.