According to the Biblical Christian worldview, human government was instituted by God to protect our unalienable rights from our own selfish tendencies (Genesis 9:6; Romans 13:1–7). Human nature is capable of both vice and virtue. We know our tendency to infringe on our neighbor’s rights in an effort to improve our own life. Therefore, we know government and political systems must exist to protect our rights and to keep our evil tendencies at bay. Protecting human rights of life, liberty, property, work, rest, worship, a free press, etc., from those who would diminish them means promoting justice. E. Calvin Beisner says justice and truth are interrelated, for justice is the practice of truth in human relationships; he concludes, “[J]ustice is rendering to each his due according to a right standard.” The right standard is God’s moral order, which is based on the very character of God. This standard insists that the innocent citizens of society be protected from evil—rapists, murderers, child molesters thieves, liars, drug runners, sex traffickers, dishonest tax collectors, adulterers, etc. Christians see justice as the principal reason for the state’s existence. The Christian view of justice is founded on a belief in God as the absolute guarantor of our unalienable rights. Thus, promoting justice becomes more important than any other aspect of government. R.J. Rushdoony is correct in his assertion that whether we “can vote or not is not nearly as important as the question of justice: does the law leave [us] secure in [our] governmental spheres, as an individual, a family, church, school, or business?” Government, therefore, has limited responsibility. The state must never assume the responsibilities of other institutions, including those of church and family. The church’s responsibility is to manifest God’s love and grace on the earth. The family’s responsibility is to manifest God’s community and creativity, including procreativity. These three God-ordained institutions—government, church, and family—are limited by their own definition as well as the definitions of the other two. Because government is an institution of justice, not of grace, community, or creativity, it should not interfere with freedom of religion, attempt to dispense grace through tax-funded handouts, control family size, interfere in the raising of children (including their education), or control the economy. Government has its role, and it should allow other God-ordained institutions the freedom to perform their roles as well.
Human governments almost always wind up overstepping their God-ordained role. Today, many political leaders, as well as leaders in other disciplines, do not understand their place in God’s universe. Their false perspectives often result in the usurpation of God’s sovereignty, which covers everyone and everything everywhere for all time (Psalm 103:19). Trusting individuals or the state rather than God results in a power-hungry and abusive state. Charles Colson says, “Excise belief in God and you are left with only two principals: the individual and the State. In this situation, however, there is no mediating structure to generate moral values and, therefore, no counterbalance to the inevitable ambitions of the State." William Penn concludes, “If we are not governed by God, then we will be ruled by tyrants.”
Today, some worldviews (such as Secular Humanism, Marxism, and to a lesser extent Postmodernism) advocate global government to serve as the ultimate political and economic authority to advance humanity’s evolution. But this is not the job or the purpose of government. It's the rights of the people to pursue their own happiness.