'Exactness' in the Bible

Therefore with this money, you shall diligently buy bulls, rams, and lambs, with their grain offerings and drink offerings, and offer them on the altar of the house of your God which is in Jerusalem.

“Son of man, take up a dirge (funeral poem to be sung) for the king of Tyre and say to him, ‘Thus says the Lord God,“You had the full measure of perfection and the finishing touch [of completeness],Full of wisdom and perfect in beauty.

I am a Jew, born in Tarsus of Cilicia, but brought up in this city, at the feet of Gamaliel, educated according to the exactness of the law of our fathers, being zealous for God, as ye are all this day;