The Sadducees, a group known for their denial of the resurrection, approach Jesus with a question rooted in the Mosaic law of levirate marriage. According to this law, if a man died without leaving children, his brother was obligated to marry the widow to produce offspring in the deceased brother's name. This practice was designed to preserve family lineage and provide security for the widow. The Sadducees use this law to pose a hypothetical situation to Jesus, aiming to trap Him into a theological debate about the resurrection, which they did not believe in.
Their question is not just about marriage customs but is a deeper challenge to Jesus' teachings on life after death. By referencing this law, they hope to expose what they see as inconsistencies in the belief in resurrection. However, Jesus uses this opportunity to teach about the nature of God's kingdom, where earthly institutions like marriage are transcended. This encounter encourages believers to look beyond the literal application of laws and to seek the underlying spiritual truths that point to God's eternal purposes.