It's because the faith is revealed before God through the deed of sowing. James 2:22 says, "You see that faith was working with his works, and as a result of the works, faith was perfected."
Es debido a que la fe se revela ante Dios por medio de las obras de la siembra. Santiago 2:22 dice: «¿No ves que la fe actuó juntamente con sus obras, y que la fe se perfeccionó por las obras?»