3 Sabiendo que la prueba de vuestra fe obra paciencia.

4 Mas tenga la paciencia perfecta su obra, para que seáis perfectos y cabales, sin faltar en alguna cosa.

3 Because you have the knowledge that the testing of your faith gives you the power of going on in hope;

4 But let this power have its full effect, so that you may be made complete, needing nothing.