עַל-כֵּן תֶּאֱבַל הָאָרֶץ, וְאֻמְלַל כָּל-יוֹשֵׁב בָּהּ, בְּחַיַּת הַשָּׂדֶה, וּבְעוֹף הַשָּׁמָיִם; וְגַם-דְּגֵי הַיָּם, יֵאָסֵפוּ
is sometimes seen as containing a citation of Bereshit 1, in reverse order. If this would be true, it would be a case of a citation of P, which therefore would have existed in the days of Hoshea. This, however, is not the case. The verse contains a phrase taken from
כָּל-חַיַּת הַשָּׂדֶה וְאֵת כָּל-עוֹף הַשָּׁמַיִם
that is, from Bereshit 2, from J, followed by a phrase taken fromאִם אֶת-כָּל-דְּגֵי הַיָּם יֵאָסֵף לָהֶם
that is, from "BaMidbar 11," from E. It is another indication that Hoshea had E and J before him, and that he purposefully used them in a unified way. The proof is the word יֵאָסֵף, which is copied to the verse Hosea 4:3.
This is similar to the verses Hosea 12:4-5:
בַּבֶּטֶן, עָקַב אֶת-אָחִיו; וּבְאוֹנוֹ, שָׂרָה אֶת-אֱלֹהִים. וַיָּשַׂר אֶל-מַלְאָךְ וַיֻּכָל, בָּכָה וַיִּתְחַנֶּן-לוֹ; בֵּית-אֵל, יִמְצָאֶנּוּ, וְשָׁם, יְדַבֵּר עִמָּנוּ
Both verses combine E (