'Wasted' in the Bible

But there were some who were indignantly remarking to one another, “Why has this perfume been wasted?

A few days later, the younger son gathered together everything [that he had] and traveled to a distant country, and there he wasted his fortune in reckless and immoral living.

When they had eaten enough, He said to His disciples, “Gather up the leftover pieces so that nothing will be lost.”

Therefore, my beloved brothers and sisters, be steadfast, immovable, always excelling in the work of the Lord [always doing your best and doing more than is needed], being continually aware that your labor [even to the point of exhaustion] in the Lord is not futile nor wasted [it is never without purpose].