Galatians 3:3; Philippians 1:6; Philippians 2:12-13

3 Are ye so foolish? having begun in the Spirit, are ye now made perfect by the flesh?

6 Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ:

12 Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.

13 For it is God which worketh in you both to will and to do of his good pleasure.