Following are my Divrei Tora from Parashat VaEira:

• Dvar Tora from Shabbat VaEira, 5774: “The Meta-Value of Empathy”
• Another Dvar Tora from Shabbat VaEira, 5774: “Thinking about All the Languages of Redemption”
• Dvar Tora from Shabbat VaEira, 5773: “Pharoah’s Hardened Heart and the Plague of Hail”
• Dvar Tora from Shabbat VaEira, 5771: “The Strong Hand”
• Dvar Tora from Shabbat VaEira, 5770: “Irreligious Fearers of God”
• Dvar Tora from Shabbat VaEira, 5769: “What You Don’t Do Can Be More Powerful Than What You Do”
• Dvar Tora from Shabbat VaEira, 5767: “The importance of time” (mp3 audio)
• Dvar Tora from Shabbat VaEira, 5766: “Pharoah’s Hardened Heart and the Plague of Hail”
• Dvar Tora from Shabbat VaEira, 5765: “Bolstering One’s Spirits by Studying”
• Dvar Tora from Shabbat VaEira, 5764: “Irreligious Fearers of God”

Note: Some of these essays have been updated over the years. Even when the same title appears, editing and changes have been applied and the essay has been somewhat altered. You might want to look at only the latest iteration of the essay. On the other hand, particularly if you have difficulty with a particular idea, checking earlier versions may be helpful.