That penalty is nothing compared to what God has in store for them.
Here is one example of God’s punishment…
Deuteronomy 28:15-68
Here, God speaks to his “chosen” people. He threatens to curse them, their food, their children, their crops, their flocks, and their work. He then threatens their health with consumption, fever, inflammation, extreme burning, botches, emerods (hemorrhoids), scabs, itches, madness, and blindness. And just for good measure, he throws in some blasting wind, mildew to rot their possessions, drought, and lets them know that the
buzzards will eat their dead bodies. But, before they die, God wants them to know that their wives will be raped; their houses, vineyards and animals stolen; and their children given away. As if all this was not enough, in verse 35, he gives them botches again. In verse 38, they get locusts. In verse 39, they get worms. In verse 41, God gives them some more children so they can watch them go into slavery. In verse 42, they get another dose of locusts. In verse 53, they will be forced to eat their own children. Finally, in verse 63, it says that God “…will rejoice…to destroy you…”
..and that was the REAL Israel after they made God angry…just imagine what God is going to do to these impostor “Israelis” !