'Carefully' in the Bible

(Now in what I am writing to you, I assure you as if I were standing before God that I am not lying.)

You carefully observe days and months and seasons and years.

But each one must carefully scrutinize his own work [examining his actions, attitudes, and behavior], and then he can have the personal satisfaction and inner joy of doing something commendable without comparing himself to another.

See with what large letters I am writing to you with my own hand.