Lexical Definition

‎עַד‎ ʻad (ad) perpetuity ^H:N-M
from ‎עָדָה‎

eternity, ever(-lasting, -more), old, perpetually, [phrase] world without end.

• properly, a (peremptory) terminus, i.e. (by implication) duration, in the sense of advance or perpetuity (substantially as a noun, either with or without a preposition)

1) perpetuity, for ever, continuing future
1a) ancient (of past time)
1b) for ever (of future time)
1b1) of continuous existence
1c) for ever (of God's existence)

See Greek: αἰών

Brown-Driver-Briggs

I. ‎עַד‎ and ‎וָעֶ֑ד‎ (so always) noun masculine perpetuity (= advancing time, compare Assyrian adû, time at the present times); —

1. of past time: ‎מִנִּי עַר‎ Job 20:4 ‎הררי עד‎ Hab 3:6 ancient mountains (compare ‎עולם‎

1.). **so Gen 49:26 (read ‎הַרְרֵי עַד‎ for ‎הוֺרַ֔י עַד‎).

2. of future time, ‎לָעַד‎ (usually ‎לָעַ֑ד‎) for ever:
a. during lifetime, of king Ps 21:7*; Prov 29:14 of others Ps 9:19*; Ps 22:27*; Ps 61:9*; Prov 12:19.
b. of things, ‎לָעַד בַּצּוּר‎ ‎יֵחָֽצֵב֑וּן‎ Job 19:24.
c. of continuous existence, of nations, ‎גְּבֶרֶת עַד‎ (of Babylon, compare ‎עולם‎ 2c) Isa 47:7 (yet see III. ‎עַד‎ II 3); anger, ‎לעד‎ Amos 1:11 elsewhere ‎עֲדֵי עַד‎ Ps 83:18*; Ps 92:8*; Isa 26:4; Isa 65:18.
d. of divine existence, ‎שֹׁכֵן עַד‎ Isa 57:15 attributes, ‎לָעַד‎ Ps 111:3; Ps 111:10; Ps 112:3; Ps 112:9 residence in Zion, ‎עֲדֵי עַד‎ Ps 132:14 law of God ‎לָעַד‎ Ps 19:10* promise as to dynasty of David, ‎לָעד‎ Ps 89:30* ‎עֲדֵי עַד‎ Ps 132:12 inheritance of land, ‎לָעַד‎ Ps 37:29 continuous relations between God and his people 1Chr 28:9; Isa 64:8*; Mic 7:18 ‎לעד‎.
e. phrases (see ‎עולם‎ 2 m): ‎(לְ)וְֺלָם וָעֶ֑ד‎ Ps 9:6*; Ps 10:16; Ps 21:5*; Ps 45:7*; Ps 45:18*; Ps 48:15*; Ps 52:10*; Ps 104:5; Ps 119:44; Ps 145:1; Ps 145:2; Ps 145:21; Exod 15:18; Mic 4:5; Dan 12:3 ‎לָעַד לְעוֺלָם‎ Ps 111:8; Ps 148:6 ‎עַדעֿוֺלְמֵי עַד‎ Isa 45:17. — Isa 30:8 read (‎עַדעֿוֺלָם‎) ‎לְעֵד‎ for a witness ᵑ6 ᵑ9 ᵑ7 Ges Ew Di Che Du) for ᵑ0 ‎לָעַד‎.

Brown-Driver-Briggs References