Hebrews 11:3

By Faith (that is, with an inherent trust and enduring confidence in the power, wisdom, and goodness of God) we understand that the worlds (universe, ages) were framed and created (formed, put in order, and equipped for the intended purpose) by the Word of God, that what is seen was not made out of things which are visible.

The Word of God created our world. Our job is to have trust and confidence that the Creator can do what He says He can do. The promises of God are real, and God is faithful to those who believe in Him. Our Faith speaks, obeys the Word, and God hears and answers our prayers.