Romans 5:8
"But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us."
Cross References (ranked by relevance)
Greater love hath no man than this, that a man lay down his life for his friends.
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
For when we were yet without strength, in due time Christ died for the ungodly.
For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
All we like sheep have gone astray; we have turned every one to his own way; and the LORD hath laid on him the iniquity of us all.
That in the ages to come he might shew the exceeding riches of his grace in his kindness toward us through Christ Jesus.
Who was delivered for our offences, and was raised again for our justification.
Moreover the law entered, that the offence might abound. But where sin abounded, grace did much more abound:
Howbeit for this cause I obtained mercy, that in me first Jesus Christ might shew forth all longsuffering, for a pattern to them which should hereafter believe on him to life everlasting.
But if our unrighteousness commend the righteousness of God, what shall we say? Is God unrighteous who taketh vengeance? (I speak as a man)