Walk in the Spirit

Galatians 5:16-18

16  This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh. 
17  For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would. 
18  But if ye be led of the Spirit, ye are not under the law.