KJV: Desiring to be teachers of the law; understanding neither what they say, nor whereof they affirm.
NASB: wanting to be teachers of the Law, even though they do not understand either what they are saying or the matters about which they make confident assertions.
KJV: Through faith we understand that the worlds were framed by the word of God, so that things which are seen were not made of things which do appear.
NASB: By faith we understand that the worlds were prepared by the word of God, so that what is seen was not made out of things which are visible.