Then come unto him the Sadducees, which say there is no resurrection;
and they asked him, saying:

"Master, Moses wrote unto us, 'If a man's brother die, and leave his
wife behind him, and leave no children, that his brother should take
his wife, and raise up seed unto his brother.' Now there were seven
brethren: and the first took a wife, and dying left no seed. And the
second took her, and died, neither left he any seed: and the third
likewise. And the seven had her, and left no seed: last of all the
woman died also. In the resurrection therefore, when they shall rise,
whose wife shall she be of them, for the seven had her to wife?"

And Jesus answering said unto them, "Do ye not therefore err, because
ye know not the scriptures, neither the power of God? For when they
shall rise from the dead, they neither marry, nor are given in
marriage; but are as the angels which are in heaven. And as touching
the dead, that they rise: have ye not read in the book of Moses, how in
the bush God spake unto him, saying, 'I am the God of Abraham, and the
God of Isaac, and the God of Jacob?' He is not the God of the dead,
but the God of the living: ye therefore do greatly err."

And one of the scribes came, and having heard them reasoning together,
and perceiving that he had answered them well, asked him, "Which is the
first commandment of all?"

And Jesus answered him, "The first of all the commandments is, 'Hear, O
Israel; The Lord our God is one Lord:' and 'thou shalt love the Lord
thy God with all thy heart, and with all thy soul, and with all thy
mind, and with all thy strength:' this is the first commandment.