'Observe' in the Bible

And why are you anxious about clothing? Observe the lilies of the field, how they grow: they do not toil or spin,

Therefore do and observe everything that they tell you, but do not do as {they do}, for they tell [others to do something] and do not do [it themselves].

teaching them to observe everything I have commanded you, and behold, I am with you all the days until the end of the age."