This drawing is a depiction of the Virgin Mary inspired by the hymn “Tota Pulchra”- a Marian hymn of a 4th century text, which was itself inspired by the Song of Songs 4:7. This Old Testament verse has unanimously been understood as referring to Mary; and so, throughout history, images of Our Lady have been illustrated under the title, “Tota Pulchra" (which also coincides with her title “The Immaculate Conception"). Like the traditional hymn, this drawing serves as a visual- rather than an audible- means of honoring Our Lady by highlighting her purity and beauty, her role in salvation history, and her intimacy with the Three Persons of the Trinity.

Read more here: https://www.aveentoma.com/post/tota-pulchra-es