[the quality of] each person's work will become evident [i.e., for what is it made of]. For the [judgment] day will expose his workmanship. And it will be revealed by the fire [of judgment], which will test the quality of a person's workmanship [i.e., the faithfulness of his converts].

Neither should we put the Lord to a test as some of them did, and were killed by snake bites [See Num. 21:5ff].