Luke 11:21

When a strong man armed keepeth his palace, his goods are in peace:

Cross-reference

Matthew 12:29 gives the same parable with the detail of tying the strong man—synoptic parallel.

Mark 3:27 Parallel

Mark 3:27 is another parallel account of the same saying about plundering the strong man.

Isaiah 49:24 asks if plunder can be taken from warriors; here the stronger one plunders the strong man—OT background of divine rescue.

Jeremiah 31:11 says God redeems from a stronger hand—echoing the deliverance Jesus brings, contrasting the strong man's false security.

Matthew 12:44 describes an unclean spirit returning to an empty house—parallel to the 'palace' metaphor, showing vulnerability after the strong man is removed.

Acts 26:18 Parallel

Acts 26:18 speaks of turning from Satan's power to God—directly connects to the strong man (Satan) overcome by Jesus, the stronger man.

Ephesians 2:2 identifies the prince of the power of the air—clarifies that the strong man is Satan, ruler of darkness.

2 Timothy 2:26 says people are captured by the devil—shows that the strong man's 'goods' are people ensnared by Satan.