Don't let anyone look down on you because you are young, but set an example for the believers in speech, in conduct, in love, in faith and in purity. - 1 Timothy 4:12

You also must be ready, because the Son of Man will come at an hour when you do not expect him. - Luke 12:40

After he said this, he was taken up before their very eyes, and a cloud hid him from their sight. - Acts 1:9

We also glory in our sufferings, because we know that suffering produces perseverance; perseverance, character; and character, hope. - Romans 5:3-4