The following verse is by the ecstatic dervish Sufi Sarmad, also known as Sarmad Kashani (ca. 1590-1661 CE). For more about Sarmad, see this earlier post.
The ocean of his generosity has no shore.
The tongue is powerless to thank,
the heart too bewildered to understand.
Though my sins are many
his compassion is greater still–
I swim in the sea of disobedience
but I do not drown.
Translation Isaac. A. Ezekiel