Hebrews 12:28-29 Wherefore we receiving a kingdom which cannot be moved, let us have grace, whereby we may serve God acceptably with reverence and godly fear: For our God is a consuming fire.
‘We receiving a kingdom which cannot be moved.’ We receive the kingdom; that is, we shall be kings and priests of the eternal earthly kingdom (Dan. 7:18, 27; Zech. 14:5; Rom. 8:17-18; 1Cor. 6:2-3; 2Tim. 2:12; Jude 1:14; Rev. 1:6; 5:10; 22:5).
‘Reverence’ [Greek: aidos] sense of honour; regard for others; respect; reverence; self-restraint, modesty or bashfulness toward men; not being bold or forward. Translated as “reverence” in Hebrews 12:28.
‘Godly fear’ [Greek: eulabeia] fear of the gods; piety; caution; discretion (5:7).
‘For our God is a consuming fire.’ Quoted from Deuteronomy 4:24. God is provoked to jealousy by sins such as murmuring (Ex. 17:2; 1Cor. 10:10), unbelief (Ex. 17:7; Heb. 4:1-11), rebellion (Num. 14:22; 21:1-9), provoking God (Ps. 78:17-18, 56), backsliding (Ps. 78:41, 56), hardening the heart (Ps. 95:8-9), lust and sin (Ps. 106:14; Ex. 32:1-35), idolatry (1Cor. 10:18-22). When His people, whom He commands to have no other gods, insist on mixing idolatry and demon worship with true worship, as some of the Corinthians did, then God is under obligation to judge them (1Cor. 8:4-13; 10:1-22).

