In Karen Kingsbury's book "Angels Walking," the central theme revolves around the idea that love should take precedence over everything else. The quote "Love first. Questions later" emphasizes the importance of prioritizing love in our interactions and decisions, suggesting that compassion and understanding should come before judgment or inquiries.

Moreover, the phrase "Grace beyond measure. All of it unconditional" highlights the notion of extending grace freely, without expecting anything in return. This reflects a profound understanding of unconditional love, encouraging readers to embrace generosity and kindness in their everyday lives.