'Discreet' in the Bible

But keep alert at all times [be attentive and ready], praying that you may have the strength and ability [to be found worthy and] to escape all these things that are going to take place, and to stand in the presence of the Son of Man [at His coming].”

And he must be hospitable [to believers, as well as strangers], a lover of what is good, sensible (upright), fair, devout, self-disciplined [above reproach—whether in public or in private].

It teaches us to reject ungodliness and worldly (immoral) desires, and to live sensible, upright, and godly lives [lives with a purpose that reflect spiritual maturity] in this present age,