OT-PROPHET.filter - jub firstborn:

jub@Isaiah:14:30 @ And the firstborn of the poor shall be fed, and the needy shall lie down in safety; and I will cause thy root to die of famine, and he shall slay thy remnant.

jub@Jeremiah:31:9 @ They shall come with weeping, but with mercies I will cause them to return; I will cause them to walk by the rivers of waters in a straight way, in which they shall not stumble; for I shall be a father to Israel, and Ephraim [shall be] my firstborn.