וַיִּתְאַבֵּ֛ל אֶפְרַ֥יִם אֲבִיהֶ֖ם יָמִ֣ים רַבִּ֑ים וַיָּבֹ֥אוּ אֶחָ֖יו לְנַחֲמֽוֹ׃
And Ephraim their father mourned many days, and his brethren came to comfort him.
Read midrashic interpretation of I Chronicles 7:22: and classical rabbinic exegesis.