The Sadducees who didn't believe in resurrection came to trap Jesus with an absurd question. Their made-up story was that a woman married seven brothers in succession without bearing children, and everyone died. Their question was whose wife she would be at the resurrection. Their story reflects their view of a resurrection life. To them, it is just the extension of an earthly, physical life with many human problems. To correct their ignorance, Jesus explains both the power of God and the scriptures to them. They erred because they assumed that life after the resurrection would be the same as it was. To them, human life just ends in death, and that's it; Life is meaningless and empty; so, "Let us eat and drink, for tomorrow we die" (1 Cor15:32). But at the resurrection, there will be no marriage, no birth, no death; everyone will be like the angels and do heavenly things.
The Sadducees failed in understanding the written law (Ex 3:6). In it, God said, "I am the God of Abraham, the God of Isaac and the God of Jacob." God is still presently their God, and they are living with Him in heaven. God is the God of the living. The resurrection of the dead brings about a different way of living for us. Physical death is not the end. Through the power of God, we can live again. The resurrection raises new realities.
Application: Lord, I see the realities of the resurrection. Help us to give ourselves fully to your work.
One Word: We will be changed