Malaquías 3

And you have said, “What have we spoken against you?” You have said, “He labors in vain who serves God,” and, “What advantage is it that we have kept his precepts, and that we have walked sorrowfully in the sight of the Lord 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?