What was the relationship between Abel and Jesus?
Jesus called Abel “righteous.” And the Letter to the Hebrews says that the blood of Jesus speaks more eloquently than that of Abel. Matthew 23:35; Hebrews 11:4; Hebrews 12:24
What the Bible says
Matthew 23:35
That upon you may come all the just blood that hath been shed upon the earth, from the blood of Abel the just, even unto the blood of Zacharias the son of Barachias, whom you killed between the temple and the altar.
Hebrews 11:4
By faith Abel offered to God a sacrifice exceeding that of Cain, by which he obtained a testimony that he was just, God giving testimony to his gifts; and by it he being dead yet speaketh.
Hebrews 12:24
And to Jesus the mediator of the new testament, and to the sprinkling of blood which speaketh better than that of Abel.
Douay-Rheims Bible (Challoner revision), public domain.
What the Church teaches
The Bible honors “Abel the just.” At Mass, the Roman Canon remembers his gifts together with the sacrifice of Abraham and the offering of Melchizedek.
Catechism 58; Roman Missal, Eucharistic Prayer I · Catechism of the Catholic Church
Did you know?
The Letter to the Hebrews says that Abel, though he is dead, still speaks through his faith. Hebrews 11:4