When did Christians crucify the flesh with its passions and desires?

The crucifixion in view most likely parallels with what Paul said previously in Galatians 2:20, in which case it refers to what happens when someone is converted.¹ Believers made a conscious choice to align themselves with Jesus Christ and turn their backs on the flesh (sinful nature) with its passions and desires.² A radical change has taken place, though the sinful nature has not yet been fully removed (see Galatians 5:17; Romans 7:7–25). There is a need for daily cross bearing, putting to death the sinful nature (see Romans 8:12–13).³