There is also a moral test that the prophet must pass. Is the person giving the prophecy exhibiting moral character consistent with his office? Jesus warned of these false prophets
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Beware of false prophets, who come in to you in sheeps clothing, but inwardly are ravenous wolves. You will know them by their fruits (Matthew 7:15,16).
The fruit that people exhibit is the fruit of their doctrine and the fruit of their lives. Both of these must be in harmony with Gods Word. Does the prophet live a life glorifying to God? Is he in submission to the authority to Gods Word? Those who do not conform to Gods standards should not be regarded as prophets.
If, however, someone meets all these criteria, are we to assume that their message is supernaturally given? Not necessarily. Apart from false prophecy, there are other types of messages that may seem worthy, but are not sent directly from God. Someone can meet all these criteria and give a message believing that it was from God, yet the source can be that professed prophets own personality.