Sat on his father's throne/ to succeed one's father
To inherit his father's status or priesthood.
("And Solomon sat on the throne of David his father, and his kingdom was firmly established" - 1 Kings 2:12)
Translation
Expression (Hebrew)
יָשַׁב עַל כִּסֵּא אָבִיו
Definition (Hebrew)
יָרַשׁ אֶת מַעֲמָדוֹ. אוֹ כְּהֻונָּתוֹ שֶׁל אָבִיו.
("וּשְׁלֹמֹה יָשַׁב עַל כִּסֵּא דָּוִד אָבִיו וַתִּכֹּן מַלְכֻתוֹ מְאֹד"- מְלָכִים א ב יב)