Many religious people vote Republican because of social issues, particularly abortion. Frequently they also support the economic policies to the Republicans even though these are at odds with their faith. This is a huge mistake.
Many Republicans very much favor abortion and are against the religious voters on many other social issues. If religious voters express support for Republican economic policies the Republicans will argue that we have to compromise to win, and since we all agree on economic issues, abortion and the social issues should be sacrificed. This is not a theoretical problem, it has frequently happened in the past.
Do Not Give Away What You are tradingThere is a very simple principle, never give away what you are trading. You do not go to the store, give money to the cashier and then ask them to give you the products of the store. You bring your purchases to the cash register and you buy them. Similarly, religious voters always need to make if very clear that they are trading.
The Republican party is a political party not a social party. We are not in the Republican party to make friends, to be liked or to have a good time.