John 6:26

6:26 Jesus replied, “I tell you the solemn truth, you are looking for me not because you saw miraculous signs, but because you ate all the loaves of bread you wanted.

John 6:47

6:47 I tell you the solemn truth, the one who believes has eternal life.

John 3:3

3:3 Jesus replied, “I tell you the solemn truth, unless a person is born from above, he cannot see the kingdom of God.”

Matthew 5:18

5:18 I tell you the truth, until heaven and earth pass away not the smallest letter or stroke of a letter will pass from the law until everything takes place.