Here are some sermons on Romans 2:16:
Judgment of the Secrets of Men by Christ on Judgment Day, by Pastor Charles Haddon Spurgeon (1834-1892)
"Sow to yourselves in righteousness, reap in mercy; break up your fallow ground: for it is time to seek the LORD, till he come and rain righteousness upon you." - Hosea 10:12 (Audio)
Here are some sermons on Hosea 10:12:
Break Up Your Fallow Ground, by Dr. Ian R. K. Paisley (1926-2014) (2005)
Time to Seek the Lord, by James Hamilton, The Street Preacher
Preparation for Rain, by Dr. Jarrold H. Lewis
Things it is Time To Do, by Dr. Alan Cairns
The Harvest of Holiness, by Dr. Alan Cairns
Getting Serious With God About Repentance, by Rev. Ian Goligher
Broken Then Blessed, by Rev. Colin Mercer
Revival Rain! by Rev. Ian Brown