Rom 14:1 As for the one who is weak in faith, welcome him, but not to quarrel over opinions.
1Cor 12:10 to another the working of miracles, to another prophecy, to another the ability to distinguish between spirits, to another various kinds of tongues, to another the interpretation of tongues.
Heb 5:14 But solid food is for the mature, for those who have their powers of discernment trained by constant practice to distinguish good from evil.

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