1 Thessalonians 3:4

For most certainly, when we were with you, we told you beforehand that we are to suffer affliction, even as it happened, and you know.

1 Thessalonians 2:14

For you, brothers, became imitators of the assemblies of God which are in Judea in Christ Jesus; for you also suffered the same things from your own countrymen, even as they did from the Jews;

John 16:1-3

"These things have I spoken to you, so that you wouldn't be caused to stumble.

Acts 17:1

Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where there was a Jewish synagogue.

Acts 17:5-9

But the unpersuaded Jews took along some wicked men from the marketplace, and gathering a crowd, set the city in an uproar. Assaulting the house of Jason, they sought to bring them out to the people.

Acts 17:13

But when the Jews of Thessalonica had knowledge that the word of God was proclaimed by Paul at Beroea also, they came there likewise, agitating the multitudes.

Acts 20:24

But these things don't count; nor do I hold my life dear to myself, so that I may finish my race with joy, and the ministry which I received from the Lord Jesus, to fully testify to the Good News of the grace of God.

2 Corinthians 8:1-2

Moreover, brothers, we make known to you the grace of God which has been given in the assemblies of Macedonia;

1 Thessalonians 2:2

but having suffered before and been shamefully treated, as you know, at Philippi, we grew bold in our God to tell you the Good News of God in much conflict.

2 Thessalonians 1:4-6

so that we ourselves boast about you in the assemblies of God for your patience and faith in all your persecutions and in the afflictions which you endure.

Treasury of Scripture Knowledge

Summary

For verily, when we were with you, we told you before that we should suffer tribulation; even as it came to pass, and ye know.

General references

Bible References

We told

John 16:1
"These things have I spoken to you, so that you wouldn't be caused to stumble.
Acts 20:24
But these things don't count; nor do I hold my life dear to myself, so that I may finish my race with joy, and the ministry which I received from the Lord Jesus, to fully testify to the Good News of the grace of God.

Even

1 Thessalonians 2:2
but having suffered before and been shamefully treated, as you know, at Philippi, we grew bold in our God to tell you the Good News of God in much conflict.
Acts 17:1
Now when they had passed through Amphipolis and Apollonia, they came to Thessalonica, where there was a Jewish synagogue.
2 Corinthians 8:1
Moreover, brothers, we make known to you the grace of God which has been given in the assemblies of Macedonia;
2 Thessalonians 1:4
so that we ourselves boast about you in the assemblies of God for your patience and faith in all your persecutions and in the afflictions which you endure.

General references

Ecclesiastes 2:20
Therefore I began to cause my heart to despair concerning all the labor in which I had labored under the sun.
Luke 21:13
It will turn out as a testimony for you.