No; for that is in the Old testament; which is passing away (2 Corinthians 3:12-15, Hebrews 8:13).
No, they should not be killed; for those things were spoken before the Cross.
After the Cross, there is a remedy for such sins (Acts of the Apostles 13:39).
1) Jesus believed in everything in God's word.
2) see above as to the reason why we are not required to kill the children of idolaters in this day and age.
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The OT is God's Word .. now you are saying it doesn't apply - because Jesus said so .. but Jesus is God - so he can change his mind right :)
Jesus is not the flip flopping Divinity you make him out to be.. one day "Kill those babies - they are evil because their some people in the town in which they live had a Bonfire and were chanting to Baal" .. the next day "Love Neighbor as Self"
Oh this theory of yours is so much fun .. Bet Jesus had a whole bunch of fun having his minions kill babies and fetuses.. and of course the pregnant women of these evil children - polluted by the sin of others in their midst... according to you.
Ahh .. but this explains scripture .. perhaps you are correct.. when on the Cross - in the self induced masochistic delerium - Jesus is so ashamed of his previous actions that he forget's who he is .. and starts calling out to himself "My God - My God - why have you forsaken me"
but good that this baby killer got his just reward .. I do not think the God he is calling to should have rescued him either .. and Glad we no longer have to follow the word of that other God that was strung up and killed
Now that this God was punished for his sin .. and has gone from this world - I agree with you that we should not follow This God's word - and follow the God that punished this God for these evil deeds.
That is quite the story you have .. and especially what follows from your logic.. where do I sign up :)