'Innermost' in the Bible

He came to the sheep pens beside the road, and a cave [was] there. Then Saul went in {to relieve himself}. Now David and his men [were] sitting in the innermost part of the cave.

Then those who remained fled to Aphek, to the city, and the wall fell on twenty-seven thousand men who had remained, so Ben-Hadad fled and went to the innermost rooms of the city.

Let the evil of the wicked come to an end, but establish [the] righteous, and test the hearts and innermost being, O righteous God.

I will bless Yahweh who advises me; yes, [at] night my {innermost being} instructs me.

Prove me, O Yahweh, and test me. Try my {innermost being} and my {mind}.

The lamp of Yahweh [is] the spirit of humankind, he who searches every {innermost part}.

The blows of a wound will cleanse evil, as will beatings of the {innermost part}.

And [if] one's relative, who burns [the body], lifts it up and brings the body out of the house and he will say to someone in the innermost part of the house, "[Are there] any more with you?" and he will say, "None," then he will say, "Silence," because [we] must not invoke the name of Yahweh.