The Latin etymological origin refers to a staging place where drama takes place. Nowadays, the pulpitum indicates the platform where preachers rise to hurl homilies.
During my early years as a PhD student in Biblical Studies, I had the rare chance to pick the moorings of John Walvoord on the matter of preaching assignment.
He had a forceful advise in this regard. He warned of any human propensity to strategize the preaching calendar lest it resemble a machinated flow. He advised against the depravity of spiritual plagiarism as one simply echoes a book or a trend that currently fancies the preacher.
He left only one option.
Listen well to the movement of the Holy Spirit and be sure to follow His lead to speak afresh the truths to God's hungry flock.