Before terms such as social justice existed, God laid down the Sabbath texts that include green ecology laws as well as commands to care for the poor, not oppress the sojourner, and treat animals equally on the Sabbath. You don’t have to accept liberal theology to validate these ideas. God wants us to be known for our acts of kindness and healing, not our individual politics.
I have gained a few Jewish friends over the years, and most do not normally encourage proselytizing Christians. However, one older gentlemen I’ve had the privilege of meeting invited me to visit his newly renovated synagogue. He gave me some shofar-blowing lessons, and we spoke about the Bible and the Sabbath. Before I left that day, he asked me to consider converting to Judaism and joining his synagogue.