NET
20 Although I am innocent, my mouth would condemn me, although I am blameless, it would declare me perverse.
Darby
20 If I justified myself, mine own mouth would condemn me; were I perfect, he would prove me perverse.
KJV
20 If I justify myself, mine own mouth shall condemn me: [if I say], I [am] perfect, it shall also prove me perverse.