When someone raises a Jewish flag in support of Israel, what do they really mean by that? Are they saying they support the political system of Israel or modern-day Judaism? Or are they supporting the people of Israel?
Either way, believers should bless and support the PEOPLE of Israel, not the political system of Israel. The system of Israel/Judaism openly rejects faith in Jesus according to the New Testament, and the Israeli people, by and large, are still enslaved to the law and heading for hell. They, too, need to repent and place their trust in Jesus alone to be saved (not their obedience to the law).
Remember, Jesus died for all PEOPLE, not temporary religious or political systems that will ultimately pass away.
Romans 10:1-3, Genesis 12:3, Romans 9:3-5, Romans 1:16, John 4:22, Romans 11:17-18, Galatians 3:29, 2 Corinthians 5:14