'Conscientious' in the Bible

However, since there were not enough priests, they weren’t able to skin all the burnt offerings, so their Levite brothers helped them until the work was finished and until the priests consecrated themselves. For the Levites were more conscientious to consecrate themselves than the priests were.

Pay close attention to your life and your teaching; persevere in these things, for by doing this you will save both yourself and your hearers.