The Levitical priests did important work. They made atonement for people—and themselves—through blood sacrifices. Since holiness and sin cannot mingle, only blood can bridge God and man. Blood sacrifices were made daily, over and over by priests who never sat down because their work never ended.
The writer of Hebrews exalts Jesus as our great high priest who sat down after his work. “And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering he has perfected for all time those who are being sanctified (Hebrews 10:11-14).
Jesus sat down after his priestly work because he accomplished atonement. He sat down so you can stand up and walk free. His once and for all sacrifice on the cross secured your eternal forgiveness. His blood reconciled you to God—and you have no further need of sacrifice because Jesus paid your debt in full. Jesus sits at his father right-hand side finished from his atoning work. He is sitting down, so you can stand up and walk free.