The Bible is clear that we are justified by faith. Jesus died on the cross. Jesus’ life was enough, his death was enough, the blood that he spilled was enough, his body that was broken was enough, the life he was resurrected to was enough. We could not earn God, we could not be Godly, and from his mercy and goodness, Jesus came for us, to live for us, to die for us, to save us from our sins. And all you have to do is to trust in that, to have faith in that.
And when you do, God gives you his Spirit. Like the Apostle Paul said in Galatians 2:20, “It is no longer I who live but Christ who lives in me. And the life I now live in the flesh I live by faith in the Son of God, who loved me and gave himself for me.”