In Adventism, there are a number of lists of Bible texts by which a true prophet may be known. Today on the internet I found two such lists, each containint 12 texts, but all of the texts were not the same, and they were clearly not in the same order.
In other words, different Adventists have come up with different lists of Bible texts for testing a true prophet.
So there are more than 12 texts.
One list was from a video
21 And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?
22 When a prophet speaketh in the name of the LORD, if the thing follow not, nor come to pass, that is the thing which the LORD hath not spoken, but the prophet hath spoken it presumptuously: thou shalt not be afraid of him.
28 And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:
Numbers 24:4, 16
4 He hath said, which heard the words of God, which saw the vision of the Almighty, falling into a trance , but having his eyes open:
16 He hath said, which heard the words of God, and knew the knowledge of the most High, which saw the vision of the Almighty, falling into a trance , but having his eyes open:
17 For how can the servant of this my lord talk with this my lord? for as for me, straightway there remained no strength in me, neither is there breath left in me.
18 Then there came again and touched me one like the appearance of a man, and he strengthened me,
JEREMIAH 28:9 The prophet which prophesieth of peace, when the word of the prophet shall come to pass, [then] shall the prophet be known, that the LORD hath truly sent him.
2 Peter 1:20 Knowing this first, that no prophecy of the scripture is of any private interpretation.
2 Peter 1:21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.
1 Corinthians 14:3
3 But he that prophesieth speaketh unto men to edification, and exhortation, and comfort.
19 And when they shall say unto you, Seek unto them that have familiar spirits, and unto wizards that peep, and that mutter: should not a people seek unto their God? for the living to the dead?
20 To the law and to the testimony: if they speak not according to this word, it is because there is no light in them.
1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.
2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
Matthew 7:15 Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
16 Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
17 Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
18 A good tree cannot bring forth evil fruit, neither can a corrupt tree bring forth good fruit.
19 Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
20 Wherefore by their fruits ye shall know them.
Another list of supposedly 12 texts (there are more than 12, obviously) can be downloaded at
which is lesson number 29, Prophecy True or False - click on the language of your choice.