וַיִּהְי֣וּ דְבָרָ֔יו עִ֚ם יוֹאָ֣ב בֶּן־צְרוּיָ֔ה וְעִ֖ם אֶבְיָתָ֣ר הַכֹּהֵ֑ן וַֽיַּעְזְר֔וּ אַחֲרֵ֖י אֲדֹנִיָּֽה׃
And he conferred with Joab the son of Zeruiah, and with Abiathar the priest; and they following Adonijah helped him.
Read halakhic rulings (Jewish law) on I Kings 1:7: and classical halakhic sources.