In March, David spent four days on the Ukrainian frontline. In Kharkiv and Donetsk regions we visited villages destroyed by the Russian army, met with the people still living there, and with military at their posts. We brought humanitarian packages for the needy, and practical gifts to assist the military. And most importantly, David brought a message of encouragement to all, preaching Christ and praying with the physically and emotionally sick. On the Sunday 500 packed the church in Slovyansk.  James 5.16 says, ‘The effectual fervent prayer of a righteous man avails much.’ Powerful prayer works! The original Greek of the Bible often uses a special word for power: dunamis – it signifies miraculous, wonder-working power. From it we get the words dynamo (which generates power), and dynamite (the explosive). If you want prayer to work, to change your circumstances, then it must generate power. And it has to be like dynamite. If you put an ordinary explosive against a wall, its energy disperses into space. But dynamite does not dissipate its energy – it pushes the wall down! That’s what our prayer must be like. It’s got to move mountains! We must learn how to talk to God, until our praying will move every mountain, every obstruction, everything that stands between us and the fulfilment of God’s promises.