39 Heb “Seek from upon the scroll of the Lord and read.” It is uncertain what particular scroll is referred to here. Perhaps the phrase simply refers to this prophecy and is an admonition to pay close attention to the details of the message.
40 Heb “one from these will not be missing.” הֵנָּה (hennah, “these”) is feminine plural in the Hebrew text. It may refer only to the birds mentioned in v. 15b or may include all of the creatures listed in vv. 14b–15 (all of which are identified with feminine nouns).
41 Heb “each its mate they will not lack.”
42 The Hebrew text reads literally, “for a mouth, it has commanded.” The Qumran scroll 1QIsaa and a few medieval have פִּיהוּ (pihu, “his mouth [has commanded]”), while a few other medieval read פִּי יְהוָה (pi yéhvah, “the mouth of the Lord [has commanded]”).
43 Heb “and his spirit, he gathers them.” The pronominal suffix (“them”) is feminine plural, referring to the birds mentioned in v. 15b or to all of the creatures listed in vv. 14b–15 (all of which are identified with feminine nouns).

In other versions

Seek and read from the book of the Lord:

Not one of these shall be missing;

none shall be without her mate.

For the mouth of the Lord has commanded,

and his Spirit has gathered them.

Look in the scroll of the Lord and read:

None of these will be missing,

not one will lack her mate.

For it is his mouth that has given the order,

and his Spirit will gather them together.

Search and read the scroll of the Lord:

Not one of them will be missing,

none will be lacking its mate,

because he has ordered it by my mouth,

and he will gather them by his Spirit.

Search the book of the Lord,

and see what he will do.

Not one of these birds and animals will be missing,

and none will lack a mate,

for the Lord has promised this.

His Spirit will make it all come true.

Seek from the book of Yahweh and read;

none of these shall be missing;

none shall miss her mate.

For my mouth is the one that has commanded,

and his spirit is the one that has gathered them.

Seek ye out of the book of the Lord, and read:

No one of these shall fail,

None shall want her mate:

For my mouth it hath commanded,

And his spirit it hath gathered them.

Public Domain