Hebrews 11:2 states the ancients were commended for their faith; Abel in verse 4 is the first example of that commendation.

Hebrews 11:5 gives Enoch's faith as the next example in the hall of faith, following Abel's account.

Hebrews 12:1 includes Abel in the cloud of witnesses—his faith example encourages readers to persevere.

Hebrews 12:24 contrasts Jesus' blood speaking a better word than Abel's—Abel's blood cries for justice, Christ's for mercy.

Hebrews 12:23 mentions the spirits of the righteous made perfect; Abel, commended as righteous by faith, is among them.

Genesis 4:3-5 records the exact event — Cain and Abel's offerings — which Hebrews interprets as Abel's faith leading to his acceptance.

Genesis 4:10 records Abel's blood crying to God—the original event that Hebrews 11:4 says still speaks.

Matthew 23:35 calls Abel the first righteous martyr—his blood crying out, linking to Hebrews 11:4's claim that he still speaks.

Luke 11:51 also mentions Abel's blood as the beginning of righteous bloodshed—echoing that his blood still speaks in Hebrews 11:4.

1 John 3:12 explicitly names Cain's murder of Abel and explains it as envy because Abel's deeds were righteous — directly illumines why Abel's offering was accepted.

Jude 1:11 condemns those walking in the way of Cain—the opposite of Abel's faithful example in Hebrews 11:4.

Genesis 4:4 is the original account of Abel's offering that Hebrews references — God respected Abel's sacrifice of the firstborn.

Genesis 4:5 shows God's rejection of Cain's offering, highlighting why Abel's was more excellent — the contrast in acceptance.

Proverbs 21:27 teaches the wicked's sacrifice is an abomination—contrasting Cain's rejected offering with Abel's faithful one.