There are varlying degrees of sin. Some sins are small compared to others. I do not imply that sin is not sin in the eyes of God, only that some sin is more sinful. Neither do I think we are able to formulate some objective scale of grading such sins. We cannot move up and down but insofar as the dictates of common sense will allow us. This sounds strange but it is true. A lie is not as great of a sin as murder a theft of a petty monetary item is not as great of a sin as adultry. A bribery is not as great of a sin as betraying Christ. "He that delievered me unto thee hath the greater sin" (Jn. 19:11).
There are also greater and lesser degrees of punishment. "He shall be beaten with many stripes...he shall be beaten with few stripes" (Lk.12:47). "It shall be more tolerable for the land of Sodom and Gomorrah in the day of judgment, than for that city" (Mat.10:15).
As for degrees of Rewards, we have this to contemplate: "I am thy shield and thy excceding great reward" (Gen. 15:1). "He shall be called the least in the kingdom of heaven...he shall be called great in the kingdom of heaven" (Mat.5:19).