1) The document discusses what our purpose and ambition should be based on scripture. It says our ambition on earth should be to please God and avoid his wrath and judgment after death.
2) It explains that sin brings God's punishment of death, and discusses how people wrongly try to pay for their sins through good works, obeying commandments, prayers, and sacrifices, rather than accepting God's solution.
3) God's solution is that Jesus, being sinless, took our sins and died in our place so we can be forgiven and made righteous through faith in him. The response required is to repent, which means turning from sin and trusting in Jesus.