'Carefully' in the Bible

They came to the house of the synagogue official; and He looked [with understanding] at the uproar and commotion, and people loudly weeping and wailing [in mourning].

(For the Pharisees and all of the Jews do not eat unless they carefully wash their hands, holding firmly to the traditions of the elders;

You disregard and neglect the commandment of God, and cling [faithfully] to the tradition of men.”

So they [carefully and faithfully] kept the matter to themselves, discussing and questioning [with one another] what it meant to rise from the dead.

And he replied to Him, “Teacher, I have [carefully] kept all these [commandments] since my youth.”