A friend recently told me that Jesus would never contradict the Old Testament scriptures.
In response to that statement, I'd like to offer this list of specific contradictions that Jesus made against teachings found in the Old Testament:
But Jesus says that to swear by anything is "from the evil one":
2) The Old Testament says that God's people should show no mercy and practice an eye for eye form of justice:
But Jesus contradicts this directly:
"But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them that despitefully use you; that ye may be the children of your Father which is in heaven." - Matthew 5:43-48
Jesus famously ignored this command when they brought the woman caught in adultery to him:
4) The Old Testament commands that no one do any work on the Sabbath:
Truthfully, the Jewish leaders of Jesus' day understood that this was in direct defiance of the specific OT command:
"[God Almighty says] Now go, attack the Amalekites and totally destroy everything that belongs to them. Do not spare them; put to death men and women, children and infants, cattle and sheep, camels and donkeys.'" - 1 Sam. 15:2-3
Can you imagine Jesus turning to you and commanding you to go next door and kill every man, woman, child, and even the pets of your neighbors? Does that sound like something Jesus would say? Does that sound like something that the "Abba" revealed by Jesus would command His children to do?