The famous letter of Ibas to Maris testifies that he struggled against extinguished Arianism and other heresies in Mopsuestia.

Now those two friends would have me murdered in my bed, as this letter you brought testifies.

The letter of thanks that Beethoven later wrote to the Matthisson testifies to his deep emotional engagement with this poem:

A letter of introduction from Thomas Paine testified that Oswald's motive was to repay France for helping America in its War of Independence.

But, as the forbidden letters testify, the two are extraordinarily resourceful in finding ways to circumvent the watchful maternal "tyrant."

Today the roads have much improved but, as many letters from participants testify, the leaving hasn't changed at all!

By 593, he had recovered his position, as a letter by Pope Gregory the Great which congratulates him on returning to the emperor's favour testifies.

The Pope's letter also testifies that by this time, Priscus had been given the Empire's supreme honorary rank, that of patrikios.

The letters of Paul, Peter, John, and Jude all testify to intra-Church conflicts over both leadership and theology.

The letters testify that Rumi kept very busy helping family members and administering a community of disciples that had grown up around them.