The past few weeks we’ve been discussing our identity in Christ and how God has already perfected us, made us complete in Him, and gifted us with His righteousness. Works-based religion will still try to find a way to put some sort of responsibility back on us, such as with the subject of sanctification. To be sanctified means to be set apart, and the gospel shows us it cannot be defined outside of what Jesus did for us on our behalf. As with justification and forgiveness, sanctification is not progressive, but was included in Christ’s finished work. We can rest in that assurance.
During the podcast, Joel mentioned this blog post of his: Instant and Permanent Sanctification.