Isaiah 61:9

9 And the seed of them shall be known among folks, and the burgeoning of them in the midst of peoples. All men that see them, shall know them, for these be the seed, whom the Lord blessed. (And their children, or their descendants, shall be known among the nations, and their burgeoning in the midst of the peoples. All who see them, shall know them, for these be the children, or the people, whom the Lord hath blessed.)

Isaiah 61:9 Meaning and Commentary

Isaiah 61:9

And their seed shall be known among the Gentiles, and their
offspring among the people
Not only the Jews will be converted as a body in the latter day, but there will be a succession of converts among them in later ages, and will be known among Christian Gentiles by their faith and love, and good works and holy conversation; and will be taken notice of and acknowledged by them as brethren, and will be famous among them for religion and godliness:

all that see them shall acknowledge them, that they are the seed which
the Lord hath blessed;
that they are the spiritual seed of Abraham, as well as his carnal seed, and are blessed with him; blessed with all spiritual blessings in Christ, with faith in him, and with every other grace.

Isaiah 61:9 In-Context

7 For your double shame and shame, they shall praise the part of them; for this thing they shall have peaceably double things in their land, and everlasting gladness shall be to them. (For your double shame, ye shall now have good things in double, and ye shall praise your portion; yea, because of this, ye shall have good things in double in your own land, and everlasting happiness shall be to you.)

8 For I am the Lord, loving doom, and hating raven in burnt sacrifices. And I shall give the work of them in truth, and I shall smite to them an everlasting bond of peace. (For I am the Lord, loving justice, or judgement, and hating stolen things used for burnt sacrifices. And I shall direct their work in truth/And I shall grant them a true reward, and I shall strike an everlasting covenant with them.)

9 And the seed of them shall be known among folks, and the burgeoning of them in the midst of peoples. All men that see them, shall know them, for these be the seed, whom the Lord blessed. (And their children, or their descendants, shall be known among the nations, and their burgeoning in the midst of the peoples. All who see them, shall know them, for these be the children, or the people, whom the Lord hath blessed.)

10 I joying shall have joy in the Lord, and my soul shall make full out joying in my God. For he hath clothed me with [the] clothes of health, and he hath compassed me with [the] clothes of rightfulness, as a spouse made fair with a crown, and as a spousess adorned with her brooches. (I rejoicing shall have joy in the Lord, and my soul shall rejoice in my God. For he hath clothed me with the clothes of salvation, or of deliverance, and he hath clothed me with the clothes of righteousness, like a spouse made handsome with a crown, and like a spousess adorned with her brooches, or her with jewels.)

11 For as the earth bringeth forth his fruit, and as a garden burgeoneth his seed, so the Lord God shall make to grow rightfulness and praising before all folks. (For like the land bringeth forth its fruit, and like a garden burgeoneth, or sprouteth, its seed, so the Lord God shall make righteousness and praising grow before all the nations.)