'Be Careful' in the Bible

"Be careful that you do not do your good deeds in front of people for the purpose of being seen by them, for [if you do] you will not have a reward from your Father in heaven.

And [then] He said to them, "Be careful and guard yourselves against [practicing] all forms of greed, for a person's life does not consist of having a lot of possessions."

And he said [to the Council members], "Men of Israel, be careful how you deal with these men.

But if you [unlovingly] bite and eat one another [i.e., figuratively], be careful that you do not totally consume one another.

So, be careful how you live. Do not live ignorantly, but wisely,

This saying is trustworthy and I want you [in your teaching] to affirm these things with confidence, so that those people who have trusted God will be careful to devote themselves to doing good deeds. These things [i.e., just mentioned] are good and profitable for people [to do].