In 2012 when drafting the party platform, Democratic leaders had removed references to God (and to Jerusalem as the capital of Israel). They didn’t merely forget to mention God; in updating previous party platforms, they made a conscious decision to remove Him.
Belatedly, democrat leaders realized that they should put God back in the picture. So an amendment to the platform was placed on the convention’s agenda. They held a voice vote on the floor of the convention to reintroduce God. Three times they held a voice vote and it was bood loudly. On the third attempt Mayor Villaraigosa just declared that 2/3's had adopted the inclusion of God.
The democrats are not interested in God or Israel. He is not in their demographic.
The Mayor was young, photogenic, a rising star in Dem politics, but that fiasco doomed Villaraigosa's political career. The vote was rigged and everyone knew it.