'Perhaps' in the Bible

They show that the essential requirements of the Law are written in their hearts; and their conscience [their sense of right and wrong, their moral choices] bearing witness and their thoughts alternately accusing or perhaps defending them

Now it is an extraordinary thing for one to willingly give his life even for an upright man, though perhaps for a good man [one who is noble and selfless and worthy] someone might even dare to die.

But he who is uncertain [about eating a particular thing] is condemned if he eats, because he is not acting from faith. Whatever is not from faith is sin [whatever is done with doubt is sinful].