God's will is revealed in God's Word. You can plainly read a great deal about God's plans, desires, and will in the Holy Bible. What you read can change your life for good. The Holy Bible isn't something that you should just read once in your life, but something that you need to read, re-read, meditate on, speak out, listen to, and study as long as you live. The truths in the Bible become more clear as you read them again, and they work their way into your spirit, where they give life and hope, and where they build faith. When you stay in the Word of God, you will know what is God's will and what is not in most situations.
"If you remain in me, and my words remain in you, you will ask whatever you desire, and it will be done for you." -- John 15:7 (WEB)
Do not let this Book of the Law depart from your mouth; meditate on it day and night, so that you may be careful to do everything written in it. Then you will be prosperous and successful. -- Joshua 1:8 (NIV)
I will meditate on your precepts,
And consider your ways.
I will delight myself in your statutes.
I will not forget your word. --
Psalm 119:15-16
To meditate on God's word, you think about it over and over, filling your mind and even your mouth with it.
But if you stay joined to me and my words remain in you, you may ask any request you like, and it will be granted! -- John 15:7 (NLT)
Next: The door to the Holy of Holies