subieren
-they will go up
The word subieren is the future subjunctive form of subir in the third person plural.
See the full subir conjugation

subir

Y acontecerá, que los de las familias de la tierra que no subieren á Jerusalem á adorar al Rey, Jehová de los ejércitos, no vendrá sobre ellos lluvia.
And it shall be, that whoever will not come up of all the families of the earth to Jerusalem to worship the King, the LORD of hosts, even upon them shall be no rain.
Y acontecerá, que los de las familias de la tierra que no subieren á Jerusalem á adorar al Rey, Jehová de los ejércitos, no vendrá sobre ellos lluvia.
And it shall come to pass, that he that shall not go up of the families of the land to Jerusalem, to adore the King, the Lord of hosts, there shall be no rain upon them.
Aunque cavasen hasta el Seol, de allá los tomará mi mano; y aunque subieren hasta el cielo, de allá los haré descender.
Not one will get away, none will escape. Though they dig down to the depths of the grave, from there my hand will take them.
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