Verse wher we have difficulty to understand the words of Jesus (pbuh) and the words of disciples
In the gospel of Mark (10:17-18. see Luke 18:18-19), a man is reported to have asked Jesus, "Good Teacher, what must I do to inherit eternal life? "Jesus (P) simply replied, "Why do you call me good? No one is good but God alone. You know the commandments: ‘You shall not murder; You shall not commit adultery; You shall not steal; You shall not bear false witness; You shall not defraud; Honor your father and mother.’ "
Look at the same event in Matthew. “Teacher, what good deed must I do to have eternal life?” “Why do you ask me about what is good? There is only one who is good. …” (Matthew 19:16-17)
What did he exactly asked and What did Jesus (pbuh) exactly answered is unknown since we have two versions of it. Either one is wrong or both are wrong.
If we go through a parrellel Bible where we can read and compare each gospels, mark with matthew, matthew with luke, luke with john, we can find this problem of getting the accurate words Jesus (pbuh) and disciples in almost all the verses. It is like each of them have their own version of Jesus (pbuh) and his teaching. Normally christians come up with the reason, they all had their own different audience etc. But at the end, what we lost is the actual words of Jesus (pbuh).