"Jesus believed that the Old Testament was divinely inspired, the veritable Word of God."
"The list of examples goes on, and the evidence is clear: Jesus saw the Old Testament as being God's Word, and his attitude toward it was nothing less than total trust. Many people want to accept Jesus, yet they reject a large portion of the Old Testament. Either Jesus knew what he was talking about, or he didn't. If a person believes in Jesus Christ, he should be consistent and believe that the Old Testament and its accounts are correct."
"Do not spare them; put to death men and women, children, and infants, cattle and sheep, camels and donkeys." 1 Samuel 15:3
You no longer have the excuse that the old testament can be ignored. jesus thought very highly of the Old Testament.