We must know the teachings of Bible as well as the law and judgements of God. Here is an introduction:

"There is none righteous, no, not one; there is none who understands; there is none who seeks after God. They have all gone out of the way; they have together become unprofitable; there is none who does good, no not one." (Romans 3:10-12)

The Ten Commandments

The ten commandments were given to the people of Israel through Moses on Mt. Sinai.
  1. I am the Lord your God. You shall have no other gods before me. (Ex. 20:2,3)
  2. You shall not make a carved image or any likeness of anything to bow down to them or serve them. (Ex. 20:4,5)
  3. You shall not take the name of the Lord your God in vain. (vs 7)
  4. Remember the Sabbath day, to keep it holy. Six days you shall labour and do all your work, but the Seventh day is the Sabbath of the Lord your God. (vs 8,9)
  5. Honour your father and mother. (vs 12)
  6. You shall not murder. (vs 13)
  7. You shall not commit adultery. (vs 14)
  8. You shall not steal. (vs 15)
  9. You shall not bear false witness against your neighbour. (vs 16)
  10. You shall not covet anything that belongs to your neighbour. (vs 17)
The Law of love/Quotes

"But he who looks into the perfect law of liberty and continues in it, and is not a forgetful hearer but a doer of the work, this one will be blessed in what he does." (James 1:25)

"If you really fulfil the royal law according to the Scripture, 'You shall love your neighbour as yourself', you do well." (James 2:8)

"You shall love the LORD your God with all your heart, with all your soul, and with all your mind. This is the first and great commandment. And the second is like it, 'You shall love your neighbour as yourself.'" (Mt. 22:37-39)

Not that we are to love only God, but we are to love also our brethren as Christ loved us (Jn 13.34,35), our neighbour (anybody that needs mercy Lk 10.27-37) and even our enemies, those who curse us, hate us, spitefully use us and persecute us (Mt.5:43,44).

Love is the fulfilment of the law. (Rom. 13:9,10). You cannot love your neighbour and steal from him, commit adultery with his wife or envy him for what he has. If you love, you will fulfil the moral law of God.

ROMANS 5
  1. Therefore, since we have been made right in God's sight by faith, we have peace with God because of what Jesus Christ our Lord has done for us.
  2. Because of our faith, Christ has brought us into this place of highest privilege where we now stand, and we confidently and joyfully look forward to sharing God's glory.
  3. We can rejoice, too, when we run into problems and trials, for we know
    that they are good for us--they help us learn to endure.
  4. And endurance develops strength of character in us, and character strengthens our confident expectation of salvation.
  5. And this expectation will not disappoint us. For we know how dearly God loves us, because he has given us the Holy Spirit to fill our hearts with his love.
  6. When we were utterly helpless, Christ came at just the right time and died for us sinners.
  7. Now, no one is likely to die for a good person, though someone might be willing to die for a person who is especially good.
  8. But God showed his great love for us by sending Christ to die for us while we were still sinners.
  9. And since we have been made right in God's sight by the blood of Christ, he will certainly save us from God's judgment.
  10. For since we were restored to friendship with God by the death of his Son while we were still his enemies, we will certainly be delivered from eternal punishment by his life.
  11. So now we can rejoice in our wonderful new relationship with God--all because of what our Lord Jesus Christ has done for us in making us friends of God.
  12. When Adam sinned, sin entered the entire human race. Adam's sin brought death, so death spread to everyone, for everyone sinned.
  13. Yes, people sinned even before the law was given. And though there was no law to break, since it had not yet been given,
  14. they all died anyway--even though they did not disobey an explicit commandment of God, as Adam did. What a contrast between Adam and Christ, who was yet to come!
  15. And what a difference between our sin and God's generous gift of forgiveness. For this one man, Adam, brought death to many through his sin. But this other man, Jesus Christ, brought forgiveness to many through God's bountiful gift.
  16. And the result of God's gracious gift is very different from the result of that one man's sin. For Adam's sin led to condemnation, but we have the free gift of being accepted by God, even though we are guilty of many sins.
  17. The sin of this one man, Adam, caused death to rule over us, but all who receive God's wonderful, gracious gift of righteousness will live in triumph over sin and death through this one man, Jesus Christ.
  18. Yes, Adam's one sin brought condemnation upon everyone, but Christ's one act of righteousness makes all people right in God's sight and gives them life.
  19. Because one person disobeyed God, many people became sinners. But because one other person obeyed God, many people will be made right in God's sight.
  20. God's law was given so that all people could see how sinful they were. But as people sinned more and more, God's wonderful kindness became more abundant.
  21. So just as sin ruled over all people and brought them to death, now God's wonderful kindness rules instead, giving us right standing with God and resulting in eternal life through Jesus Christ our Lord.