Leviticus 1:4 And he shall put his hand upon the head of the burnt offering; and it shall be accepted for him to make atonement for him.
This burnt offering would go and make atonement for the person. They were to put their hands on his head. This was to recognize that this animal was bearing the weight and punishment of their sins.
That is the lesson of the cross. Jesus bears the weight and punishment of the sins of the entire world. Know that your salvation is because someone took your place, paid your debt, and brought salvation to you!