the missing context is that the Christian groups he was speaking to typically have low turn out/don't often come out to vote. He's asking them to please come ou

the missing context is that the Christian groups he was speaking to typically have low turn out/don't often come out to vote. He's asking them to please come out to vote, it's important this time. It's exactly the same rhetoric democrats use "this is the most important election, you really need to vote this time, this time it really matters"