Matthew 26:37-38

And he took with him Peter and the two sons of Zebedee, and began to be sorrowful and in deep anguish.

Luke 22:44

And being in an agony, he prayed more earnestly: and his sweat was as it were great drops of blood falling down on the ground.

2 Corinthians 2:4

For from much affliction and anguish of heart I wrote to you with many tears, not that ye might be grieved, but that ye might know the abundant love which I have toward you.

Treasury of Scripture Knowledge

Summary

Therefore I will not refrain my mouth; I will speak in the anguish of my spirit; I will complain in the bitterness of my soul.

Bible References

The anguish

Matthew 26:37
And he took with him Peter and the two sons of Zebedee, and began to be sorrowful and in deep anguish.
Luke 22:44
And being in an agony, he prayed more earnestly: and his sweat was as it were great drops of blood falling down on the ground.
2 Corinthians 2:4
For from much affliction and anguish of heart I wrote to you with many tears, not that ye might be grieved, but that ye might know the abundant love which I have toward you.