Do we all sin? The Bible teaches that we all inherit sin from the first man, Adam. (Romans 5:12) Some translations seem to contradict this by saying that a good person "does no sin" or "sinneth not." (1 John 3:6, The Bible in Basic English; King James Version) In the original language, though, the Greek verb for "sin" at 1 John 3:6 is in the present tense, which in that language normally indicates a continuous action. There is a difference between inherited sin, which we cannot avoid, and the deliberate, continuous practice of disobeying God’s laws. Thus, some translations clear up this seeming contradiction by accurately using phrases such as “does not practice sin” or “does not habitually sin.”—New World Translation; Phillips.
So from whom did Adam inherit sin?
What is this sin that we cannot avoid?