Christ is the culmination of the law so that there may be righteousness for everyone who believes. Not the end in the sense of abolition, but in the sense of goal and fulfillment. The law pointed to Christ, and in him it is fulfilled.
That means righteousness no longer comes through keeping the law but through faith. Whoever believes in Christ is righteous. Not partially, not on probation, righteous. That is the core of the New Covenant.
Today you can receive the righteousness that comes from faith.