I think you have your facts all backwards. Please provide documentation where Biden said this. I think you'll find it was Trump who said "Christians, get out and vote, just this time. You won't have to do it anymore. Four more years, you know what, it will be fixed, it will be fine, you won't have to vote anymore, my beautiful Christians."
He added: "I love you Christians. I'm a Christian. I love you, get out, you gotta get out and vote. In four years, you don't have to vote again, we'll have it fixed so good you're not going to have to vote,". This was reported by Reuters,
https://www.reuters.com/world/us/tr...ont-have-vote-after-this-election-2024-07-27/, Fox5 in Washington DC, where Laura Ingraham gave Trump a chance to explain his remarks;
Trump explains his Christians ‘won't have to vote again’ comments, and US News and World Report;
https://www.usnews.com/news/world/a...ns-they-wont-have-to-vote-after-this-election among a host of other media outlets. You say it was "scary" when you claim that Biden said it, is it just as scary that Trump said it instead?