Amen, amen, I say to you, if anyone will have kept my word, he will not see death for eternity.
Other versions
King James Version
Verily, verily, I say unto you, If a man keep my saying, he shall never see death.English Standard Version
Truly, truly, I say to you, if anyone keeps my word, he will never see death."New International Version
I tell you the truth, if anyone keeps my word, he will never see death."