I strongly believe that it was how he was taking charge of what they held in their possession. What they held was the law. Jesus was taking the law, changing it, and in their minds he was hindering their power. He of course was doing this, and it extremely bothered the leaders of Israel. Out of their jealousy of Jesus' new found power, they killed him. In doing so, they violated one of the Ten Commandments.
“You shall not covet your neighbor’s house. You shall not covet your neighbor’s wife, or his male or female servant, his ox or donkey, or anything that belongs to your neighbor.” (Exodus 20:17)
The leaders coveted a possession of their neighbor (Jesus' power), and they broke a law which they had vowed to uphold.
Thanks for reading!
Tha
T