To act on the "Word". You need to walk by "Faith". Now, most people believe "Faith" should only be utilized when you want to ask anything from the God. Noooooo, Christianity is built on "Faith", "Faith" goes beyond only in times of asking.The Bible says " For without Faith it is impossible to please God".Now tell me, how will you or how can you do God's "Word" when He that sent the "Word" is not happy with you? Haha sounds funny right?. Picture this, remember that teacher you disliked in school? Did you always get higher mark in his subject compared to the teacher's subject you liked?.
When God is pleased with you through your "Faith" the Father will cause all things to work in your favour so you can do his "Word"