'Blood' in the Bible

in whom we have the redemption through his blood, the remission of the trespasses, according to the riches of His grace,

and now, in Christ Jesus, ye being once afar off became nigh in the blood of the Christ,

because we have not the wrestling with blood and flesh, but with the principalities, with the authorities, with the world-rulers of the darkness of this age, with the spiritual things of the evil in the heavenly places;