Ezekiel 43: 27 And when these days are expired, it shall be, that upon the eighth day, and so forward, the priests shall make your burnt offerings upon the altar, and your peace offerings; and I will accept you, saith the Lord GOD.
Men are unacceptable in the presence of God on their own merit. God however is able to make us acceptable. He told them what to do to become acceptable. They were to make a sacrifice, burnt offerings, and peace offerings. Then He said He would accept them. He would gladly love and accept them once and offering had been made for sin.
That is what happens in the New Testament when Jesus as the Lamb of God comes to the cross to die and pay our sin debt. We accept that offering, that sacrifice as Jesus dying in our place and God then accepts us.
We are accepted in the Beloved, in Christ, our Sacrifice.