Holbein's decision to show Erasmus in strict profile was a conscious return to an older convention, one traditionally used for depicting scholarly churchmen and saints rather than the more naturalistic three-quarter views that had become standard in contemporary portraiture^[2]. That choice lends Erasmus's act of writing a formality closer to a devotional image than a casual likeness, placing the humanist scholar visually within a lineage of serious, contemplative religious figures even though the text he is writing is a scholarly biblical commentary rather than a devotional work itself.

The composition is not a generic image of a scholar at his desk. Holbein shows Erasmus actively composing his commentary on the Gospel of Saint Mark, a work dedicated to Francis I of France and completed in 1523, and a second version of the same composition on paper preserves the text more legibly than the painted version, confirming what Erasmus is actually shown writing^[1]. That specificity places the picture's creation in the same year as the text itself, suggesting Holbein painted Erasmus close to the moment of the commentary's completion rather than assembling a retrospective or generic image of scholarly labour.

Erasmus mentioned in a June 1524 letter that he had sent two portraits of himself to England. One is documented as going to his patron William Warham, the Archbishop of Canterbury, who later had his own portrait painted in a composition that deliberately echoed this one, swapping the Renaissance pilaster for a cross and the flask for a mitre^[1]. This Louvre painting, or a version very close to it, may be the second portrait Erasmus mentioned sending, and its simpler, more intimate character, without the fuller trappings visible in some other Holbein renderings of Erasmus, has been read as a sign it was made for a personal friend rather than a formal patron^[1].