For I know the plan I have for you,
declared the Lord,
plans for welfare and not for evil,
to give you a future and a hope.
Then you will call upon me and pray to me,
and I will hear you.
You will seek me and find me,
when you seek me with all your heart.
It means God is Omniscient. He has a good future planned out for us. He will call upon us when he wants to show us something, we just have to listen for it. Also, that we have to seek and find God in our hearts, and we will feel his presence.