ISB ~ Matthew 26 v39

let this chalice pass:Jesus fears his Passion and Crucifixion. As a man, he has a natural aversion to suffering that is both physical (crucifixion) and spiritual (bearing the sins of the world). As God’s Son, he could have suppressed these human passions by divine effort, but he chose to embrace the Father’s plan even in agony. This ordeal in the garden is traditionally viewed as Satan’s most aggressive assault on Jesus (Lk 22:53) (CCC 612). See note on Mt 20:22.

not as I will:Jesus entrusts himself to the Father despite his fear of death (cf. Phil 2:8; Heb 5:7). Note that his human will is in perfect harmony with the divine will (cf. Jn 6:38; CCC 475).