On the Luther Sermon Podcast I read from Luther’s House Postils.
I’m using a translation from 1884 that is in the public domain. Here are the links for you to download the texts as well.
Volume 1: (Advent 1-Judica/Passion Sunday)
- Internet Archive: https://archive.org/details/Dr.MartinLuthersHouse-postilVol1Ohio1884secondEdition
- Google Books: https://books.google.com/books?id=4tFBAQAAMAAJ&printsec=frontcover&dq=martin+luther+house+postil+volume+1&hl=en&sa=X&ved=0ahUKEwjg2sDbt4LOAhWC64MKHdGbAw4Q6AEIHjAA#v=onepage&q&f=false
Volume 2: (Maundy Thursday-Whitsunday/Pentecost)
- Internet Archive: https://archive.org/details/Dr.MartinLuthersHouse-postilVol2Ohio1884secondEdition
- Google Books: https://books.google.com/books?id=HvorAAAAYAAJ&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
Volume 3: (Sundays in Trinity)