No! Jesus came so that ALL would be fully restored (through Grace). The obedience of the Old Covenant is replaced by Faithfulness (in the completed work of Jesus Christ) through the New Covenant. And living life in the completed work of Jesus is true Joy!!
.
You are one truly confused dude!
The “old covenant” is now the same covenant renewed in Yeshua’s blood.
The covenant is not with any imaginary church, but with the two houses of Israel (Jer 31:31-38)
Obedience to Torah is Yehova’s righteousness.
Faith is the keeping of Yehova’s commandments. Grace is the writing on our hearts of Torah (Romans ch2, Jer ch 31)
Yeshua’s work is not complete. He has fulfilled only the spring feasts. The fall feasts remain to be completed.
Matthew 7: 21-23 reveals the words that most “christians” will hear at the great white throne.
.