Mark 13:7

And, when ye hear of wars and rumors of wars, be not troubled; these things must come to pass; but the end is not yet.

Matthew 18:7

"Woe to the world because of stumbling-blocks! for there is a necessity that the stumbling-blocks come; but woe to the man through whom the stumbling-block comes!

Matthew 24:6-7

And ye will hear of wars and rumors of wars. See that ye be not troubled, for these things must come to pass; but the end is not yet.

Luke 21:9-11

And, when ye hear of wars and tumults, be not terrified; for these things must first come to pass; but the end is not straight-way."

John 14:1

"Let not your heart be troubled: believe in God, believe also in Me.

John 14:27

"Peace I leave for you; My own peace I give to you; not as the world gives, give I to you. Let not your heart be troubled; neither let it be fearful.

Acts 17:3

opening and setting forth that it was necessary that the Christ should suffer, and rise again from the dead; and that "This Jesus Whom I am proclaiming to you, is the Christ."

Treasury of Scripture Knowledge

Summary

And when ye shall hear of wars and rumours of wars, be ye not troubled: for such things must needs be; but the end shall not be yet.

Bible References

When

Matthew 24:6
And ye will hear of wars and rumors of wars. See that ye be not troubled, for these things must come to pass; but the end is not yet.
Luke 21:9
And, when ye hear of wars and tumults, be not terrified; for these things must first come to pass; but the end is not straight-way."
John 14:1
"Let not your heart be troubled: believe in God, believe also in Me.

Must

Matthew 18:7
"Woe to the world because of stumbling-blocks! for there is a necessity that the stumbling-blocks come; but woe to the man through whom the stumbling-block comes!
Acts 17:3
opening and setting forth that it was necessary that the Christ should suffer, and rise again from the dead; and that "This Jesus Whom I am proclaiming to you, is the Christ."