Shouldn’t We All Be Harvesters?

Questions about how to handle objections from Christians who think we should all be harvesters and should not focus on gardening, and whether attending a service at a mosque would communicate approval of the religion (similar to attending a same-sex wedding). How do you handle objections from Christians who think we should all be harvesters and should not focus on gardening? Should Christians attend a service at a mosque in order to reach the nations, or would this communicate approval of the religion (similar to attending a same-sex wedding)?