Galatians 3:3

3:3 Are you so foolish? Although you began with the Spirit, are you now trying to finish by human effort?

Galatians 5:16-17

5:16 But I say, live by the Spirit and you will not carry out the desires of the flesh. 5:17 For the flesh has desires that are opposed to the Spirit, and the Spirit has desires that are opposed to the flesh, for these are in opposition to each other, so that you cannot do what you want.