Treasury of Scripture Knowledge
1 Corinthians 2:15
But the spiritual person [i.e., one who has the Holy Spirit] is able to discern all things [i.e., has the ability to make right judgments about things], and he himself [i.e., his conduct] cannot be [critically] discerned by any [unbelieving] man.
Do not make judgments based [merely] on how things look, but make judgments on how they really are."
1 Corinthians 3:13
[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].
"Do not pass [condemning] judgment [on other people] so that you do not receive such judgment [on yourselves].