en_tn/1sa/28/05.md

trembled in his heart

This means he was very afraid, emphasizing the fear with this doublet (See: rc://en/ta/man/translate/figs-metonymy, rc://en/ta/man/translate/figs-doublet)

Urim

The high priest carried the sacred lots called Urim and Thummin in his breastplate, in a marked pouch, next to his heart.

Endor

Endor was in Galilee, south-east of Nazareth.