Isaiah 66:11

“That ye may suck, and be satisfied with the breast of her consolations, &c.] This, according to our version, expresses the end of the church’s friends being called together to rejoice with her, that they might partake of her joys and comforts, delights and pleasures: but the words may be better rendered, either, according to Kimchi’s sense, “therefore shall ye suck”f1301, &c.; because ye have mourned for her, and because ye have rejoiced with her; or rather, as Noldiusf1302, “because ye suck”, &c.; partake of her privileges and ordinances, so give a reason why they should rejoice with her. “Breast” is put for “breasts”, as Jarchi observes; for as the church is represented as a woman, and as…”

“suck-- (Isa 60:5, Isa 60:16; Isa 61:6; Isa 49:23). abundance--Hebrew, "the ray-like flow of her opulence," that is, with the milk spouting out from her full breasts (answering to the parallel, "breast of her consolations") in ray-like streams [GESENIUS].”

“That ye may suck - The same figure occurs in Isaiah 60:16; and substantidally in Isaiah 49:23. See the note at those places. That ye may milk out - The image is an obvious one. It means that they who sympathized with Zion would be nourished by the same truth, and comforted with the same sources of consolation. And be delighted with the abundance of her glory - Margin, ‘Brightness.’ Lowth renders this, ‘From her abundant stores.’ Noyes, ‘From the fullness of her glory.’ Jerome (the Vulgate), ‘And that you may abound with delights from every kind of her glory.’ The Septuagint, ‘That sucking ye may be nourished from the commencement’ (Thompson); ‘or the entrance of her glory’ (ἀπὸ εἰσόδου…”

“Consolations - The gospel doctrine was their breasts of consolation. Her glory - Christ was the glory of the people of Israel, though he was also a light to the Gentiles. Isaiah 66:12”

“ye may suck: Isa 60:5, Isa 60:16; Psa 36:8; Joe 3:18; Pe1 2:2 abundance: or, brightness Isaiah 66:12”