Revelation 10

He said, “Take it, then eat it. It will taste sweet like honey, but turn sour in your stomach.” I took the little book from the Angel’s hand and it was sweet honey in my mouth, but when I swallowed, my stomach curdled.

Weird, right?
I needed help with some of this.  

http://www.discoverrevelation.com/Rev_10.html

The "Little Book" that was seen in heaven in verse 2 has a similar mission as that given to Ezekiel 3 v.1-3 and Jeremiah 15 v.16. The prophetic Word, which is what the "Little Book" is, contains the "sweet" message of God's wonderful plan for mankind including the coming of Christ, the Millennium Kingdom, and Heaven, but it also contains the Judgment of God on sinners who do not repent and come to Him, and their ultimate consignment to hell.

Just the fact that it is opened tells us that it is to be revealed to those who will consume it. As believers, we are told to eat this book, just as John was told to eat it. This "little book", I believe, is the Word of God, the Bible.

The Bible (Word) is alive.  When we eat the Bible it gives us the strength to live victorious lives before Him. Jesus is in dominion over everything. He is our source of power. Studying the Bible is more important to our life than our daily bread.  Praise God, the Bible is of no private interpretation. God the Holy Spirit will teach each of us what the Bible is saying to us.

The planting of the feet on the sea and the earth (dry land) shows Christ's authority over the earth in its entirety, and the appropriation of His promised inheritance as Messiah.