There is one word which sums up the heart, nature and purpose Christianity. Jesus said love is the defining mark of His disciples, and described and modelled this love as selfless, sacrificial and unconditional. We're called not only to love the Lord this way, but also everyone else, including our enemies. Holding this heart of sacrifice will alter our mindset, change our relationships and give us an effective ministry that honors Christ.  Video of this service is also available:  https://www.youtube.com/watch?v=14oT66qrqxY&t=2205s