Piper and Lent? Anabaptist Piper Oddly Posts Various Posts about Lent

http://www.desiringgod.org/blog/posts/sixth-sunday-of-lent?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+DGBlog+%28DG+Blog%29

Rather odd that a predestinarian Anabaptist, a TULIP Anabaptist, John Piper, is commenting about Lent when non-conforming Presbyterians, Congregationalist, and Anabaptistic types have strenuously and energetically opposed the liturgical calendar.  Most odd.