“God . . . will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away.”—Revelation 21:3, 4, New World Translation.
God has the ability to fulfill the promise. In the Bible, Jehovah God alone is called “the Almighty,” for he has unlimited power. (Revelation 15:3) So he is fully able to keep his promise to change our world for the better. As the Bible says, “with God all things are possible.”—Matthew 19:26.
God has the desire to fulfill the promise. For example, Jehovah has a longing to restore life to people who have died.—Job 14:14, 15.
The Bible also shows that God’s Son, Jesus, healed the sick. Why did he do so? Because he wanted to. (Mark 1:40, 41) Jesus perfectly reflected his Father’s personality by his desire to help those in need.—John 14:9.