Strong G1922 ἐπίγνωσις epignōsis · knowledge

Romans

1. Romans 1:28
   And even as they did not like to retain God in their knowledge, God gave them over to a reprobate mind, to do those things which are not convenient;
2. Romans 3:20
   Therefore by the deeds of the law there shall no flesh be justified in his sight: for by the law is the knowledge of sin.
3. Romans 10:2
   For I bear them record that they have a zeal of God, but not according to knowledge.