Deuteronomy 18:21

You may say in your heart, ‘How will we know the word which the Lord has not spoken?’

1 Thessalonians 5:24

Faithful is He who calls you, and He also will bring it to pass.

1 John 4:1-3

Beloved, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.

Revelation 2:2

‘I know your deeds and your toil and perseverance, and that you cannot tolerate evil men, and you put to the test those who call themselves apostles, and they are not, and you found them to be false;

Treasury of Scripture Knowledge

Summary

Deuteronomy 18:21

And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?

General references

1 Thessalonians 5:24

1 John 4:1

Revelation 2:2

Bible References

General references

Faithful is He who calls you, and He also will bring it to pass.

Beloved, do not believe every spirit, but test the spirits to see whether they are from God, because many false prophets have gone out into the world.