And a certain woman cast a piece of a millstone upon Abimelech’s head, and all to brake his skull.
Thus God rendered the wickedness of Abimelech, which he did unto his father, in slaying his seventy brethren: and all the evil of the men of Shechem did God render upon their heads: and upon them came the curse of Jotham the son of Jerubbaal.
Judges 9:53, 56-57

In order to know what is going on with these verses you will need to read all of  chapter nine of the book of Judges.

Abimelech is one of the 70 or so of Gideon’s sons. Gideon is also known as Jerubbaal. Abimelech has a desire to be king even though his father has said the he, nor his sons would rule Israel (Judges 8:23). He kills all the other sons of Jerubbaal, except one who is named Jotham.

In chapter nine is parable spoken by Jotham warning Abimelech and Israel his evil leadership, of his life’s end. The parable is about trees searching for a tree to rule over them; they go to the olive tree, the fig tree, and are rejected. They are rejected by all the trees until they get to a bramble bush who accepts the invitation.

In our text above we see Abimelech being killed by a woman who has thrown a mill stone down on his head, then he cries out to another man to finish him with a sword, because he did not want it said, “Abimelech was killed by a woman.”

It was an evil thing that Abimelech had done in the murder of 70 of his own brothers, and out of a lust for power. The main message here is that God watches over His people, and carries out His word, and the curse of Jotham was fulfilled.

God’s word stands sure. It should be the Christians confidence, our encouragement, and draw our strength from God in the reading, study, and personal application of the word of God in our lives. The books of the Old Testament – the Law, the History, the Wisdom books, the Major Prophets, and the Minor Prophets are the word of God. The books of the New Testament – The Gospels, Matthew, Mark, Luke, and John; the Acts, the Epistles of Paul, and all the rest through the Revelation are the words of the Lord. We must learn them, hear them, and do them. Especially as we see the day of the LORD drawing nearer.

The written word of God shows us who Jesus is. He was before Abraham, Jesus said, “Before Abraham was, I Am” (John 8:58). So Jesus Himself is declaring that He is God. He is also our Lord and Savior who died on the cross for our sins, becoming sin for us, that we might be made the righteousness of God in Him (2 Corinthians 5:21). When He died, He was buried, and three days later He rose again, and walked out of the cold ugly tomb. Through Him there is Life, and Life Eternal with Him.