The crowds had the privilege of seeing Jesus standing right in front of them and speaking to them (Lk 11:29). Yet they sought a sign from Him rather than seeking Him, Who was the Sign (Lk 11:29-30). Because of our fallen human nature, human beings tend to ignore Jesus or even forget Him after having met Him (e.g. Gal 3:1). How can we ignore, forget, and reject the One Who loves us so much that He died on the cross for each one of us? How can we abuse God by "crucifying the Son of God...and holding Him up to contempt"? (Heb 6:6) How can we stop ignoring, forgetting, rejecting, abusing, and crucifying God, Who is Love (1 Jn 4:8, 16) and has died to save us?
Our egomania, addiction to self, and solipsism blinds us to everything, including God, our abuse of Him, and our hardened hearts. The Lord breaks through this heart of darkness in many ways, especially through Mary. For example, while He was hanging on the cross in the hour of terrifying rejection, Jesus turned to Mary and told her to be a mother to His disciples (Jn 19:26) so that we would no longer abandon Him and would instead lead all people to love Him faithfully.
Stop abusing Jesus. Mary will help.