Noun akribeia (exactness) in the Gospels-Acts

(Translation from NRSV with a few modifications for a more literal meaning)

Acts

22: 3"I am a Jew, born in Tarsus in Cilicia, but brought up in this city at the feet of Gamaliel, educated according to the exactness (akribeia) of our ancestral law, being zealous for God, just as all of you are today.