What does the Bible say about God's response to prayer?

In Habakkuk 2, we see the assurance that God answers prayer, as He responded to Habakkuk after his cries for help. This reflects a sovereign grace perspective: God listens to His people, despite our unworthiness, and answers in His perfect timing. Daniel's experience of praying for 21 days illustrates that God hears us instantly, but the answer may come later, allowing us to grow in faith and dependence. The principle from James 4:2 echoes this reality, emphasizing that we do not have because we do not ask.