concretely

(in various senses). a support, base or foundation (Arist., al.; opp. to ): substance φαντασία, ἔμφασις He 1:3 (Polyb., al.), hence, : , (here perhaps as that which gives reality or guarantee; v. MM, xxv).† steadiness, firmness assurance, confidence title-deed, II Co 9:4 11:17 He 3:14 11:1

grond, zelfstandigheid

(lit: an underlying), (a) confidence, assurance, (b) a giving substance (or reality) to, or a guaranteeing, (c) substance, reality.

confidence/essence

a setting under (support), i.e. (figuratively) concretely, essence, or abstractly, assurance (objectively or subjectively)

confidence, confident, person, substance

ὑπό-στασις, -εως, ἡ (ὑφίστημι, to set under, stand under, support) [in LXX for מַצָּב (1Ki.13:23 14:4 B), תִּקְוָה (Rut.1:12, Eze.19:5), etc., also in Wis.16:21 ;] 1. a support, base or foundation (in various senses). 2. substance (Arist., al.; opposite to φαντασία, ἔμφασις): Heb.1:3 3. steadiness, firmness (Polyb., al.), hence, assurance, confidence: 2Co.9:4 11:17, Heb.3:14 11:1 (here perhaps title-deed, as that which gives reality or guarantee; see MM, xxv).† (AS)