THE LAW OF SPIRITUAL RECIPROCITY.

Luke 6:38 "Give, and it will be given to you." 2 Cor. 9:6-7"Whoever sows sparingly will also reap sparingly, and whoever sows generously will also reap generously. Each man should give what he decided in his heart to give, not reluctantly or under compulsion, for GOD loves a cheerful giver.
Why these words were written and to whom? They were written during a difficult period in which the spiritual relationship between man and church was at its lowest point. Some of them had made wicked accusations against Paul, the apostle of the gentiles. He publicly showed his deep longing for reconciliation.
Gal. 6:7 "Do not be deceived: GOD cannot be mocked. A man reaps what he sows."
Gal. 6:8 "The one who sows to please his sinful nature, from that nature will reap destruction; the one who sows to please the spirit, from the spirit will reap eternal life."
These words were written in order to bring back the Christians who were being misled by false teachings from the true Faith and Practice. It is by Faith alone that Christians are put right with GOD and their conduct will flow naturally from the sincere Love that results from this Faith acting in Christ.
Hebrews 12: 11"No discipline seems pleasant at the time, but painful. Later on, however, it produces a harvest of righteousness and peace for those who have been trained by it.
These words were written to those Christians who were weak in their spiritual lives and dangerously were falling into darkness because of their reluctancy in following the truth in Jesus Christ as the final revelation of GOD.
The writer appeals to the spirit  of these Christians to remain faithful and urges to continue faithful to the end, with their spiritual eye fixed on Jesus, and to endure whatever suffering and persecution coming to them. In doing this the writer emphasizes three truths:
1) Jesus is the eternal Son of God, who learned true obedience to the Father through the suffering that he endured. As the Son of God, Jesus is superior to the prophets of the Old Testament, to the angels, and to Moses himself.
2) Jesus has been declared by God to be an eternal priest, superior to the priests of the Old Testament.
3) Through Jesus the sincere believer is saved from sin, fear, and death; and Jesus, as High Priest, provides the true salvation, which was only foreshadowed by the rituals and animal sacrifices of the Hebrew religion.