Jesus didn't come to aid of John the basptist when John was imprisoned and beheaded. This might have created doubts on disicples' mind why Jesus didn't do he could to help. Mostly these disciples like you and me were searching things earthly, thinking a Messiah, Yes the King of Jews supposed to deliver them a glorious and majestic kingdom on earth. What now being spat and humilitated on the cross----- What a cynical act of crude jokes on Jesus' followers!!! Would you have doubts if you were His followers back then? Or even now????
Jesus implies the ultimate secret and supreme wisdom of God's Word. He sai d "Eat me so you won't go hungry, drink me so you won't feel thirsty..... I am the true light." Time is now for you to come to meet the true Lord.
I forgot to add one more thing that: those signs or miracles performed by Jesus had shown he had special powers, but nothing unique just as so did Satan.