Extend that to two days...now three....
Now, extend that thought to every day of the life of Jesus Christ, Our Lord and Saviour, and your thoughts will resonate with the Truth.
Concupiscence. The propensity of human nature to actual sin as a result of the original sin, which darkened our intellects and weakened our wills.
Me and thee have weakened human natures and we are prone to sin due to consupisence. Jesus' took on Human Nature free from the deficiencies of original sin - therefore, no concupiscence.
Prior to the fall, Adam and Eve were, similarly, free from concupisence and sexual temptation