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