(John 11:25)
It is very clear, that if our Lord could claim to be the resurrection and the life, it meant death for Him on the cross. And further this claim carries with it the thought that He died representatively, that He has become the resurrection, so that all, who put their faith in Him, may have part in His resurrection, inasmuch as when He will shout the summoning shout at His second coming, all the saints, who have passed away, will be raised as well. So we read, "Jesus said unto her, I AM the resurrection and the life: he that believeth in Me, though he were dead, yet shall he live: and whosoever liveth and believeth in Me shall never die. Believeth thou this?" (John 11:25). "If the Spirit of Him, that raised up Jesus from the dead dwell in you, He that raised up Christ from the dead shall also quicken your mortal bodies by His Spirit that dwelleth in you." (Rom. 8:11).
That is, the holy indwelling Spirit of God is the pledge to the believer that our Lord is the resurrection and the life; that is, in Him there is a resurrection unto life for every believer in His name.
Thus our Lord comforted the sorrowing Martha, and would comfort each one of us today.