Mark 13:30 in the World English Bible
Most certainly I say to you, this generation will not pass away until all these things happen.
Context
29 So ye in like manner, when ye shall see these things come to pass, know that it is nigh, even at the doors.
30 Verily I say unto you, that this generation shall not pass, till all these things be done.
31 Heaven and earth shall pass away: but my words shall not pass away.