His timing has more to do with events.
God does work in the context of time. (Galatians 4:4; Ecclesiastes 3)
2. God's preparation is always adequate.(11)
God's Word will not return empty
a. We have the assurance of every promise of God.
b. The Scriptures
c. Jesus- the Living Word
3. God's signs are always sufficient. (12-13)
a. an outright miracle
b. the laws of nature
c. the subtle arranging of circumstances.
The trees of the field would be reminders of God's promise.
4. God's ways are always consistent.
Every prophecy of Scripture has come true or will soon come true.