Yes, we cannot do otherwise because we inherited sin from Adam. Romans 5:12. Jesus who was not an offspring of Adam & therefore free from sin, could make atonement on our behalf
wrong on both counts,
i didn't inherit my sins from Adam,
i'm personally responsible for my own sins,
i proportion NO blame to Adam,
it's ALL my own fault
and Jesus is an offspring of Adam through his mothers side,
she didn't find him in a manger, She had him in her womb for 9 months.