I do not find Jesus teaching harld to accept because the Bible is very clear to all that no one is without sin. The problem is that sometimes forgiveness is very hard especially if it is to the same person each time, but thanks be to God when you are saved by Grace you learn to be tolerent and increase your faith.

Jesus told His disciples you must forgive your brother seventy times seven. Jesus knew that man would hurt us over and over and the world would be full of corruption and hatred if we couldn't forgive and love, ans so He ask us to forgive as many times as it takes.

There is no one perfect so we should constantly ask Jesus to forgive us and He does because He is a loving God.