Greater love has no man than this: that a man lay down his life for his friends.
John 15:13 MEV
The ultimate selfless act of God’s love was manifest in Christ Jesus when He gave His life for His enemies.
But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. How much more then, being now justified by His blood, shall we be saved from wrath through Him. For if while we were enemies, we were reconciled to God by the death of His Son, how much more, being reconciled, shall we be saved by His life. Furthermore, we also rejoice in God through our Lord Jesus Christ, through whom we have now received reconciliation. Romans 5:8-11 MEV