When quoting Isaiah, as recorded by Luke, Jesus states three related phrases about release, from captivity, blindness and oppression. Oppression is about being afflicted, crushed, more by actions and not necessarily by the imposition of physical barriers. To who are the oppressed that Jesus is speaking?

God’s son, the children of Israel were enslaved and then additionally were oppressed in their slavery.

Jesus is mainly quoting Isaiah chapter 61 but adds in sections of other prophesies of Isaiah. Isaiah refers to release from oppression and illustrates it by being like a yoke, the binding on animals operating a treadmill. The context is hypocrisy, the people seem eager to seek God as if they delight in His ways. Yet it is a show, a pretence. The real motivation is to get God to favour them, to do what they want Him to do. The example here is fasting in order to twist God’s arm to answer their selfish desires. This is an example of religion and its underlying purpose. Isaiah makes it clear that God doesn’t respond to religion. He sees it as a form of oppression. He wants people to enjoy freedom, as expressed in Jubilee (Sabbath rest not religious observance). His acceptable day is about righteousness defined as sharing with the hungry, housing the homeless and clothing the naked. This is when God guards and answers and enlightens and guides and satisfies and strengthens and refreshes and restores. He wants us to respond to Him because we want to respond to Him and for no other reason. He is determined not to oppress us but to release us to make our own choices.

He delights in us (His Sabbath rest) and wants us to delight in Him. Jubilee is about release from oppression.

Jesus comes to lighten the load, to bring rest. He doesn’t want religious observance.

Jesus releases from legal restrictions that inhibit, oppress. 

Its about release, joy, delight and good pleasure.