Malaquías 3

Ye have said, Vain is it to serve God,—and, What profit when we have kept his charge, or when we have walked gloomily before Yahweh of hosts?

Habéis dicho: Por demás es servir á Dios; ¿y qué aprovecha que guardemos su ley, y que andemos tristes delante de Jehová de los ejércitos?

Ye have said, It is vain to serve God: and what profit is it that we have kept his ordinance, and that we have walked mournfully before the LORD of hosts?

You have said, ‘It is vain to serve God,’ and ‘What profit is it that we have followed his instructions and that we have walked mournfully before the LORD of Armies?