2 Thessalonians 2:2

not readily to become unsettled in mind or troubled--either by any pretended spiritual revelation or by any message or letter claiming to have been sent by us--through fancying that the day of the Lord is now here.

Mark 13:7

But when you hear of wars and rumours of wars, do not be alarmed: come they must, but the End is not yet.

1 Corinthians 1:8

who will also keep you stedfast to the very End, so that you will be free from reproach on the day of our Lord Jesus Christ.

Matthew 24:4-6

"Take care that no one misleads you," answered Jesus;

Matthew 24:24

For there will rise up false Christs and false prophets, displaying wonderful signs and prodigies, so as to deceive, were it possible, even God's own People.

Luke 21:9

But when you hear of wars and turmoils, be not afraid; for these things must happen first, but the end does not come immediately."

Luke 21:19

By your patient endurance you will purchase your lives.

John 14:1

"Let not your hearts be troubled. Trust in God: trust in me also.

John 14:27

Peace I leave with you: my own peace I give to you. It is not as the world gives its greetings that I give you peace. Let not your hearts be troubled or dismayed.

Acts 20:23-24

except that the Holy Spirit, at town after town, testifies to me that imprisonment and suffering are awaiting me.

Ephesians 5:6

Let no one deceive you with empty words, for it is on account of these very sins that God's anger is coming upon the disobedient.

1 Thessalonians 3:3

that none of you might be unnerved by your present trials: for you yourselves know that they are our appointed lot.

1 Thessalonians 4:15

For this we declare to you on the Lord's own authority--that we who are alive and continue on earth until the Coming of the Lord, shall certainly not forestall those who shall have previously passed away.

1 Thessalonians 5:2

For you yourselves know perfectly well that the day of the Lord comes like a thief in the night.

2 Thessalonians 2:15

So then, brethren, stand your ground, and hold fast to the teachings which you have received from us, whether by word of mouth or by letter.

2 Thessalonians 3:17

I Paul add the greeting with my own hand, which is the credential in every letter of mine.

2 Peter 2:1-3

But there were also false prophets among the people, as there will be teachers of falsehood among you also, who will cunningly introduce fatal divisions, disowning even the Sovereign Lord who has redeemed them, and bringing on themselves swift destruction.

2 Peter 3:4-8

and, asking, "What has become of His promised Return? For from the time our forefathers fell asleep all things continue as they have been ever since the creation of the world."

1 John 4:1-2

Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world.

Revelation 19:20

who had done the miracles in his presence with which he had led astray those who had received the mark of the Wild Beast, and those who worshipped his statue. Both of them were thrown alive into the Lake of fire that was all ablaze with sulphur.

Treasury of Scripture Knowledge

Summary

That ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, as that the day of Christ is at hand.

General references

Bible References

Shaken

Matthew 24:6
And before long you will hear of wars and rumours of wars. Do not be alarmed, for such things must be; but the End is not yet.
Mark 13:7
But when you hear of wars and rumours of wars, do not be alarmed: come they must, but the End is not yet.
Luke 21:9
But when you hear of wars and turmoils, be not afraid; for these things must happen first, but the end does not come immediately."
John 14:1
"Let not your hearts be troubled. Trust in God: trust in me also.
Acts 20:23
except that the Holy Spirit, at town after town, testifies to me that imprisonment and suffering are awaiting me.
Ephesians 5:6
Let no one deceive you with empty words, for it is on account of these very sins that God's anger is coming upon the disobedient.
1 Thessalonians 3:3
that none of you might be unnerved by your present trials: for you yourselves know that they are our appointed lot.

By spirit

Matthew 24:4
"Take care that no one misleads you," answered Jesus;
2 Peter 2:1
But there were also false prophets among the people, as there will be teachers of falsehood among you also, who will cunningly introduce fatal divisions, disowning even the Sovereign Lord who has redeemed them, and bringing on themselves swift destruction.
1 John 4:1
Dear friends, do not believe every spirit, but put the spirits to the test to see whether they are from God; for many false teachers have gone out into the world.
Revelation 19:20
who had done the miracles in his presence with which he had led astray those who had received the mark of the Wild Beast, and those who worshipped his statue. Both of them were thrown alive into the Lake of fire that was all ablaze with sulphur.

Nor by letter

1 Thessalonians 4:15
For this we declare to you on the Lord's own authority--that we who are alive and continue on earth until the Coming of the Lord, shall certainly not forestall those who shall have previously passed away.
2 Peter 3:4
and, asking, "What has become of His promised Return? For from the time our forefathers fell asleep all things continue as they have been ever since the creation of the world."

General references

Acts 3:20
and that He may send the Christ appointed beforehand for you--even Jesus.