When I recall the short way of remembering a list of the conjunctions, FANBOYS, for, and, nor, but, or, yet, so, how could for be used as a conjunction? Could it be used in
Justin and Mark could not see, for they were blind.
When I recall the short way of remembering a list of the conjunctions, FANBOYS, for, and, nor, but, or, yet, so, how could for be used as a conjunction? Could it be used in
Justin and Mark could not see, for they were blind.
Justin and Mark could not see, for they were blind.
The sentence makes sense and is correct. There's a saying "can't see the forest for the trees" which also uses for in this way. However, this construction is formal sounding and maybe a little old fashioned. Most people would say:
Justin and Mark could not see because they were blind.