ISB ~ John 6 v53

eat the flesh … drink his blood:Jesus is speaking literally and sacramentally. If he were speaking me

taphorically orfiguratively, his words would echo a Hebrew idiom where consuming flesh and blood refers to the brutalities of war (Deut 32:42; Ezek 39:17-18). no life in you: i.e., divine life.

• Drinking the blood of animals is forbidden under the Old Covenant (Gen 9:4; Lev 17:10-13; Deut 12:16). To do so is to consume “life” that is merely natural and of a lower order than human life. Jesus’ injunction does not fall under these prohibitions. The “life” he imparts is not natural but supernatural; it does not pull us down to the level of animals; it elevates us to become sharers in his divine nature (2 Pet 1:4) (CCC 1391).