Ezra 8:35 Also the children of those that had been carried away, which were come out of the captivity, offered burnt offerings unto the God of Israel, twelve bullocks for all Israel, ninety and six rams, seventy and six lambs, twelve he goats for a sin offering: all this was a burnt offering unto the Lord.
The deliverance from captivity, the return to Jerusalem, and the rebuilding of the temple was such a big deal, that even the children born in Babylon that did not know the former life celebrated with a grand worship of the Lord. They offered offerings to the Lord in great abundance. Their thankfulness to God for salvation pulled out all the stops.
The burnt offerings were a sign pointing to the coming once-for-all sacrifice of the promised Messiah. The offering of these sacrifices was the outward expression of faith in the promised Salvation. NT believers no longer make burnt offerings, but they look back in faith to the offering of Jesus Christ. Through the cross of Christ we are forgiven of sin and made holy and acceptable to God. We remember the offering of Christ and by faith apply it to ourselves every time we repent and confess, remember our Baptism, and go to church to hear the Gospel and receive the sacrificed body and blood of Christ for our deliverance.
We have been born in captivity to sin, death, and the devil, but the offering of Jesus Christ sets us free and brings us home. The result is constant thanksgiving and never-ending praise during our lifetime.