1 Coríntios 2:15

In contrast to the natural man stands the spiritual (Gr. pneumatikos) man. He or she is a mature Christian (cf. 1 Corinthians 3:1). One of the things the spiritual person is able to do is appraise or make judgments (Gr. anakrino) regarding all things. In other words, the spiritual person has discernment. This affects his values and decisions. For this very reason he is a puzzle to the natural man. The profane person cannot understand holiness, but the holy person can understand the depths of evil. Even carnal fellow believers cannot fully understand the spiritually mature person. That is all right, in one sense, because the spiritual person’s judge is ultimately God, not other people. [Note: See Charles C. Ryrie, "What Is Spirituality?" Bibliotheca Sacra 126:503 (July-September 1969):204-13, or idem, Balancing the Christian Life, pp. 12-23.]

This verse is not saying believers are responsible only to God but that the Christian is answerable to God alone ultimately (cf. 1 Corinthians 4:3-4). Paul recognized the value of church discipline (1 Corinthians 5:3-8), constructive criticism (1 Corinthians 11:17-18), and self-judgment (1 Corinthians 11:31) as having immediate value.