He has set the right time for everything. He has given us a desire to know the future, but never gives us the satisfaction of fully understanding what he does.
“My Father has given me all things. No one knows the Son except the Father, and no one knows the Father except the Son and those to whom the Son chooses to reveal him.
The seeds that fell among thorn bushes stand for those who hear the message; but the worries about this life and the love for riches choke the message, and they don't bear fruit.
Because those people refuse to keep in mind the true knowledge about God, he has given them over to corrupted minds, so that they do the things that they should not do.