King James Version
Strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able.English Standard Version
"Strive to enter through the narrow door. For many, I tell you, will seek to enter and will not be able.New International Version
He said to them, "Make every effort to enter through the narrow door, because many, I tell you, will try to enter and will not be able to.