Yes, the world has changed in many ways since the Bible was written -- but have you ever stopped to think about the things that haven't changed over the centuries?
For one thing, human nature hasn't changed. We may live in more comfortable houses and have better medical care -- but down inside we really aren't any different from people who lived thousands of years ago. If you read the Bible (or any other literature from the ancient world), you'll realize that the people who lived then had the same fears and hopes and shortcomings we have today -- because human nature hasn't changed.
But neither has God changed. He is the same today as He was thousands of years ago -- and thousands of years from now He'll still be the same. His power never changes, His wisdom never changes, His righteousness never changes, and His love never changes. The Bible says, "I the Lord do not change" (Malachi 3:6).
But something else hasn't changed -- and that is our need of God. We need His forgiveness, and we need His strength to live the way we should. More than that, we need hope -- hope for our lives right now, and hope for eternity. And these can be ours, because Jesus Christ came to change us. Don't turn your back on Christ, but open your heart and life to Him today. He changed people 2,000 years ago -- and He can change your life as well, because "Jesus Christ is the same yesterday and today and forever" (Hebrews 13:8).