Luke tells us (Luke 16:16, NIV) that, “The Law and the Prophets were proclaimed until John. Since that time, the good news of the kingdom of God is being preached, and everyone is forcing their way into it.” This verse is among a collection of sayings and parables that Jesus taught in regard to the defective religious understandings of the Pharisees. It does not seem to tell us that the kingdom of God had actually arrived at that time but that the ordinary people were eager for the new religious ideas being proclaimed by Jesus. In fact, “faith” rather than “forcing” seems the right approach to entering the kingdom. Jesus’ words seem to show that not only the Pharisees but the common people had wrong ideas about what was meant by a place in the kingdom.
In another place (Matthew 23:13, NIV), we find among the seven woes that Jesus pronounced regarding the teachers of the Law and the Pharisees these words, “Woe to you, teachers of the law and Pharisees, you hypocrites! You shut the door of the kingdom of heaven in people’s faces. You yourselves do not enter, nor will you let those enter who are trying to.” People’s interest in the kingdom of heaven was being actively opposed by respectable religious groups.
There is another obstacle to entering the kingdom of God—wealth. In Mark 10:23-25 (NIV) we are told, “Jesus looked around and said to his disciples, ‘How hard it is for the rich to enter the kingdom of God!’ The disciples were amazed at his words. But Jesus said again, ‘Children, how hard it is to enter the kingdom of God! It is easier for a camel to go through the eye of a needle than for someone who is rich to enter the kingdom of God.’” The same teaching is recorded in Matthew 19:23-24 and Luke 18:24-25 (NIV). No matter how we interpret the camel and the eye of the needle it is clear that Jesus taught that wealth constituted a difficulty when it came to entering the kingdom of God.
In 1 John 2:16 we are warned against the love of the world and the craving for things that John calls “the lust of the eyes” (NIV). Seemingly this is the explanation for the severe words of Jesus, “And if your eye causes you to stumble, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, where ‘the worms that eat them do not die, and the fire is not quenched.’” (Mark 9:47-48, NIV)
Paul tells us in three places that various forms of immorality not just create difficulties in regard to entering the kingdom of God they make it impossible for those who practice them to do so. “For of this you can be sure: No immoral, impure or greedy person—such a person is an idolater—has any inheritance in the kingdom of Christ and of God” (Ephesians 5:5, NIV). In 1 Corinthians 6:9-10 (NIV) we have a description of some of the forms of immorality that bar people from the kingdom of God. “Or do you not know that wrongdoers will not inherit the kingdom of God? Do not be deceived: Neither the sexually immoral nor idolaters nor adulterers nor men who have sex with men nor thieves nor the greedy nor drunkards nor slanderers nor swindlers will inherit the kingdom of God.” Galatians 5:19-21 (NIV) provides another list of behaviors that keep people out of the kingdom of God. “The acts of the flesh are obvious: sexual immorality, impurity and debauchery; idolatry and witchcraft; hatred, discord, jealousy, fits of rage, selfish ambition, dissensions, factions and envy; drunkenness, orgies, and the like. I warn you, as I did before, that those who live like this will not inherit the kingdom of God.”