John Frame on the Comprehensiveness of Scripture

"Jesus anticipates a kingdom covering the earth, in which people love God and their neighbors from the heart.  The gospel that we preach throughout  the world is the good news that the kingdom of God is at hand (Matt. 3:2; 4:17, 23; 5:3; Acts 1:3; 8:12; 19:8; 20:25; 28:23, 31).  In the fundamental prayer of God's people (Matt. 6:10), we ask that God's kingdom come.  That kingdom will inevitably change human institutions as well.  When people are converted to believe in Christ, they bring their new faith and love into their daily work.  They ask how Christ bears upon their work as historians, scientists, musicians, how this new passion of theirs affects art, entertainment, medicine, the care for the poor and sick, the justice of courts, the punishment of convicts, relations between nations.  All of life is different because of grace.  And indeed, Christians have influenced their societies in profound ways through the centuries: adopting babies left to die, building hospitals and orphanages, working to abolish slavery."  

--John Frame The Doctrine of the Word of God, page 218