'Truly I Tell You' in the Bible

Jesus therefore said to them, "Truly I tell you, unless you eat the flesh of the Son of Man and drink his blood, you do not have life in yourselves.

Jesus answered them, "Truly I tell you, everyone who commits sin is the bondservant of sin.

"And in that day you will ask nothing of me. Truly, truly I tell you, whatever you may ask of the Father in my name, he will give it to you.

Truly I tell you, when you were young, you dressed yourself, and walked where you wanted to. But when you are old, you will stretch out your hands, and another will dress you, and carry you where you do not want to go."