The word posáis is the present form of posar in the second person plural.
See the full posar conjugation


Proceded de la misma manera con relación a la vida futura; aprovisionados de todo lo que allá os posáis servir.
Follow the same way with the life to come; be prepared of all that ye will serve you there.
Want to Learn Spanish?
Spanish learning for everyone. For free.
SpanishDict Premium
Have you tried it yet? Here's what's included:
Cheat sheets
No ads
Learn offline on iOS
Fun phrasebooks
Learn Spanish faster
Support SpanishDict