The Bible tells us there are both true and false apostles. Let's learn to discern the difference.
For many years traditional denominations taught that the ministry of the apostle passed away after the New Testament era. It was assumed that the only people who served in apostolic roles were early followers of Jesus who witnessed His resurrection. Cessationists (those who believe that miracles stopped after the canon of Scripture was completed) believe that healing, deliverance, prophecy and all other supernatural phenomena ceased and that apostles are no longer necessary.
But as Christians in recent years began to experience the supernatural gifts of the Holy Spirit, church leaders and even some theologians began to teach that the gift of apostle is vital if we hope to advance the gospel in our generation. The logic makes sense: If we still need pastors, teachers and evangelists (all part of Jesus' five-fold ministry mentioned in Ephesians 4:11), we also need the apostles and prophets who are listed in the same passage. The Bible never says these functions were discontinued.