But of Him you are in Christ Jesus, who became for us wisdom from God and righteousness and sanctification and redemption

1 Corinthians 1:30
But of Him you are in Christ Jesus, who became for us wisdom from God and righteousness and sanctification and redemption

The Scripture says that when believers are in Christ, He becomes sanctification for us. That means that we don't need to try and be sanctified, but when we live in Him, we are sanctified. It is His sanctification that will be given to us. So again, it is not through our own efforts to achieve sanctification, rather we allow Christ to be in our lives and so we receive His sanctification. A commentator said that this is not about imitating Yshua, because we can never be like Him, but letting His perfect qualities exhibit in us.