The most recent episode of "East of Eden: The Biblical and Systematic Theology of Jonathan Edwards" is now out. You can find it here. Originally preached in Northampton in 1735, and then preached again in 1752, The Most High, a Prayer Hearing God was preached on a fast appointed on the account of epidemical sickness at the eastward of Boston. In this sermon, Edwards focuses on the benefit of prayer as a blessing of the redemption that we have in Christ. Edwards develops the idea that God delights to hear and answer prayer. You can find all of the "East of Eden" episodes here.