Hebrews 11:3 By faith we understand that the entire universe was formed at God's command, that what we now see what we see in the physical did not come from anything that can be seen.
Mark 8:11-13 ...They demanded that He show them a miraculous sign from heaven to prove His authority. 12 When He heard this, He sighed deeply in His spirit and said, “Why do these people keep demanding a miraculous sign? I tell you the truth, I will not give this generation any such sign.” 13 So He got back into the boat and left them, and He crossed to the other side of the lake.
Mark 8:14-16 But the disciples had forgotten to bring any food.