Commentaries:
Robertson's Word Pictures (NT)
Equal unto the angels (isaggeloi). A rare and late word from isov, equal, and aggelov. Only here in the N.T. Mark and Matthew have "as angels" (wv aggeloi). Angels do not marry, there is no marriage in heaven.
Sons of God, being sons of the resurrection (uioi qeou thv anastasewv uioi ontev). This Hebraistic phrase, "sons of the resurrection" defines "sons of God" and is a direct answer to the Sadducees.
Other commentary entries containing this verse:
Mark 12:25
Luke 6:35
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