If you had a house and leased it to someone, it remains yours, but for the period of the lease, you have no authority over that house.
In the same way, God has given man this world to run, and for the time being, He can't run the world by himself; He's given you the authority to do that. The time will come for Him to run the world but until then, you and I have the devine responsibility to run the world for Jesus Christ, and He hold us accountable for how we ran our world.
Many, including Christians, analyze the events and happenings in the world and wonder why God isn't "doing" anything to right the wrongs. Well, if you're waiting on God to do something, you're making a mistake. He needs you. He doesn't, and wouldn't do anything without you, until the lease runs out, and a new heaven and a new earth takes its place. However, until then, the responsibility is ours to tame and subdue this world.
Look out it this way: God want us healthy and sound, and stated it as His desire for us. 3 John 1:2, "Beloved, I. Wish above all things that thou mayest prosper and be in health, even as they soul propereth. "Yet. In James 5;16, He said, "Confess your faults one to another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much. "
Why is that? Why does he want us to pray for one another so that we may be healed? Why doesn't He heal us? It's because He needs the right to take action on our behalf; so, He charged us to pray. Therefore, take your place as a joint heir with Christ and fufil your purpose here on earth. Read Romans 8:19-21; it puts it in perspective: "For the earnest expectation of the creature waiteth for the manifestation of the sons of God. For the creature was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope, Because the creature itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God." He needs you.