Luke 6:36-42 (ESV)
Be merciful, even as your Father is merciful.  "Judge not, and you will not be judged; condemn not, and you will not be condemned; forgive, and you will be forgiven;  give, and it will be given to you. Good measure, pressed down, shaken together, running over, will be put into your lap. For with the measure you use it will be measured back to you."
 He also told them a parable: "Can a blind man lead a blind man? Will they not both fall into a pit?  A disciple is not above his teacher, but everyone when he is fully trained will be like his teacher.  Why do you see the speck that is in your brother's eye, but do not notice the log that is in your own eye?  How can you say to your brother, 'Brother, let me take out the speck that is in your eye,' when you yourself do not see the log that is in your own eye? You hypocrite, first take the log out of your own eye, and then you will see clearly to take out the speck that is in your brother's eye.”
Finally, only God is the judge. And judge he does. There will be judgment on the last day. And on that day, I imagine these words will come back to bite us.
Jesus talks about us trying to get the speck out of our brother’s eye, when we ourselves have a log in ours. The metaphor is over the top. A man with a log in his eye is dead. You can picture it now. That is exactly what is meant. You are dead in your own trespasses. You have a log in your eye. Perhaps when that is removed you will be in a position to help your brother with the speck in his eye. Of course the log of death in our own eye can only be removed by the forgiveness of sins which breathes new life into us through the waters of baptism. But then we do see clearly how to deal with the speck in our brother’s eye, and it isn’t to fumble around with our fingers pointed to poke his eye out, but to deal with his sin the same way our sin has been dealt with, forgive it.