Through the Spirit

Galatians 5:1-6; NKJV
 
1 Stand fast therefore in the liberty by which Christ has made us free, and do not be entangled again with a yoke of bondage. 

2 Indeed I, Paul, say to you that if you become circumcised, Christ will profit you nothing. 

3 And I testify again to every man who becomes circumcised that he is a debtor to keep the whole law. 

4 You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace. 

5 For we through the Spirit eagerly wait for the hope of righteousness by faith. 

6 For in Christ Jesus neither circumcision nor uncircumcision avails anything, but faith working through love.

We obey the gospel by faith and we receive the remission of our sins and the gift of the Holy Spirit (Acts 2:38).  We are born of the Spirit (John 3:5).  We wait for the hope of righteousness by faith "though the Spirit" (Galatians 5:5).