This book is heretical and belongs in the trash. Christ did not need to wash His sins away. That is blasphemy!
1 Peter 2:22
He committed no sin, neither was deceit found in his mouth.
1 John 3:5
You know that he appeared in order to take away sins, and in him there is no sin.
Hebrews 4:15
For we do not have a high priest who is unable to sympathize with our weaknesses, but one who in every respect has been tempted as we are, yet without sin.