26 He shall burn all the fat on the altar as he burned the fat of the fellowship offering. In this way the priest will make atonement for the leader’s sin, and he will be forgiven.

Read Leviticus 4:26 Using Other Translations

And he shall burn all his fat upon the altar, as the fat of the sacrifice of peace offerings: and the priest shall make an atonement for him as concerning his sin, and it shall be forgiven him.
And all its fat he shall burn on the altar, like the fat of the sacrifice of peace offerings. So the priest shall make atonement for him for his sin, and he shall be forgiven.
Then he must burn all the goat’s fat on the altar, just as he does with the peace offering. Through this process, the priest will purify the leader from his sin, making him right with the LORD, and he will be forgiven.