You yourself must set the criteria of your promise and pray. Then, you will receive an answer quickly.
You yourself must make a certain promise and pray. Then, you will receive an answer quickly.
For example, if you pray, "I will pray early at predawn, so please just wake me up," then you will receive an answer easily.
'The criteria of promise' are the Word that God, the Holy Spirit, and the Holy Son have spoken.
A person who keeps that Word can always receive an answer.