God tells us to love everyone. But where in the Bible did you read we are commanded to "support Israel"?
“I will make you into a great nation and I will bless you; I will make your name great, and you will be a blessing. I will bless those who bless you, and whoever curses you I will curse; and all peoples on earth will be blessed through you.” (Genesis 12:2-3)
I don’t know exactly where to find it but it says if any nation turn its back on Israel, God will turn His back on that nation.