prestasteis
-you lent
The word prestasteis is the preterite form of prestar in the second person plural.
See the full prestar conjugation

prestar

Ni un solo alma fue forzada a hacerlo, y todos y cada uno de vosotros os prestasteis voluntariamente para la experiencia.
Not a single soul was forced to do so, and each and every one of you freely volunteered for the experience.
Tened en cuenta también que hace mucho, mucho tiempo os prestasteis voluntarios para experimentar un viaje por la oscuridad, sabiendo que nosotros siempre estaríamos con vosotros.
Also bear in mind that a long, long time ago you willingly volunteered to experience a journey into the darkness, knowing that we would always be with you.
Pero no prestásteis atención.
Just you didn't pay attention.
Tened en mente que os prestasteis voluntarios para vuestras vidas sobre la Tierra que os han dado muchas oportunidades para descubrir cosas sobre la dualidad.
Bear in mind that you volunteered for your Earth lives, that have given you so many opportunities to find out about duality.
Daros cuenta de que la dualidad está llegando a su fin, y que os prestasteis voluntarios para experimentar en ella, y efectivamente podéis verlo como un experimento.
Realize that duality is all but at an end and that you volunteered to have experience within it, and it can rightly be viewed as an experiment.
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