Jesus was merciful and extended that merciful hand to all sinner including the prostitute that was being stoned by the mob. But He immediately said to her after being delivered from the mob “go and SIN NO MORE. Nor did He imply “come to church next Sunday and we will make prostitution not a sin any more”.
Jesus walked and talked under the Old Covenant - if we were able to do this "Sin no more" thing, He would not have had to die on the Cross for our sins.
If you think that since being saved, you manage to sin no more, you are delusional - even the Catholic Church acknowledges this via the existence of Confession...
When Jonah deemd those in Nineveh too wicked to warrant saving, he headed in the other direction - what did God do about that? Your Pope is probably more Biblically correct than any in the history of the Church and you condemn him as being too easy on the sinners - you know, those other guys...