Luther's Sermons -
Many links have two or three sermons together on that topic.
Rogate - Prayer
Ascension of Christ
The Day of Pentecost
Pentecost Monday - John 3:16
Pentecost Tuesday - John 10 - I AM the Good Shepherd
Pentecost Wednesday - On Faith and Coming to Christ
The First Sunday after Trinity - The Rich Man and Lazarus
The Second Sunday after Trinity - The Great Feast. Luke 14:16-24
Two Sermons on the Lost Sheep and the Lost Coin - Luke 15:1-10
The Fourth Sunday after Trinity - Treatment of Our Enemies - Luke 6:36-42
The Fifth Sunday after Trinity - The Draft of Fish - Luke 5:1-11
The Sixth Sunday after Trinity - Matthew 5:20-26
The Eighth Sunday after Trinity - Matthew 7:15-23 - Beware of False Teachers
The Ninth Sunday after Trinity - Luke 16:1-9. The Unrighteous Steward
The Tenth Sunday after Trinity - Jesus' Warning about the Destruction of Jerusalem
The Eleventh Sunday after Trinity - Parable of the SynCon Leader versus the Publican.
The Twelfth Sunday after Trinity - Healing of the Deaf Mute. Mark 7:31ff.
Luther's Sermons on the Good Samaritan
Trinity 14 - Faith and the Healed Lepers
Trinity 15 and Sermons Following
Augsburg Confession and Apology on Justification
Massive collection on UOJ and Justification by Faith.