Behind today’s window is a picture.
Fragment of Isenheim Altarpiece, by Mathis Grünewald, 1512-1516
Unusually, John the Baptist is depicted at the crucifixion scene (unusually because he had been executed before Jesus’ death) – here he is, in his role as the forerunner of Christ, pointing to Him.
How can you point people to Christ? You are a living signpost to him.
By Mathias Grünewald – The Yorck Project: 10.000 Meisterwerke der Malerei. DVD-ROM, 2002. ISBN 3936122202. Distributed by DIRECTMEDIA Publishing GmbH., Public Domain, https://commons.wikimedia.org/w/index.php?curid=152341