“Turn the other cheek” never meant allow yourself to be conquered by an enemy. It was used in the context of kindness to those in your own community, not to enemies bent on your destruction.
Obama, most Democrats and the assembly of communists and socialists Obama belongs to are not, and never have been in our community. They only seek to destroy it.
” not to enemies bent on your destruction...”
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I believe the Lord also discussed our behaviour in regards to “enemies”, and it was far from the behaviour that you are implying.