In John 3:14 of The Message, it says, "In the same way that Moses lifted the serpent in the desert so people could have something to see and then believe, it is necessary for the Son of Man to be lifted up—and everyone who looks up to him, trusting and expectant, will gain a real life, eternal life."
"...so people could have something to see and then believe..." How often do we demand a sign before we will believe? Or how often do we say we have faith, but we demand a sign of proof to assure us that our faith is not in vain? Doubt seeps in wherever it can.
Faith - true faith - can be defined as "being sure of what we hope for and certain of what we do not see." Hebrews 11:1 It is not believing in the absurd, it is trusting in the character of God, the Truth. Hebrews 11 show many examples of faith in action.
Be encouraged this day, God will do what He says. Do not doubt it. God is faithful, so should you be.