Today's reading is a rather short passage. We find more genealogies, including another concubine of Abraham's who bore him more children. Some think he married her after Sarah's death, and some think she was his concubine already beforehand - apparently the verb tense is unclear (took or had taken are both possibilites), and in 1 Chronicles she is referred to as a concubine. In either case, this shows us that Abraham was the father of a multitude of nations, but no matter how many children he had, Isaac alone was the child of promise.
God's promise to Abraham regarding Ishmael (17:20) is also shown to be fulfilled by him having 12 sons.
According to this commentary this chapter teaches the principle of divine election. God chose Sarah, not Hagar or Keturah to be the mother of the of the child of promise. He chose Isaac, before he was even born, to be that child. And he chose Jacob, instead of the (barely) elder Esau to be the next child or promise, also before they were born. God did not choose them based on the good deeds He knew they would do. In fact, they often had less than stellar actions (Jacob stoops pretty low in the coming chapters). God chose, not based on their good deeds, and despite their bad deeds, He simply chose.
Consider Romans 9:10-12 And not only this, but there was Rebekah also, when she had conceived twins by one man, our father Isaac, for though the twins were not yet born, and had not done anything good or bad, in order that God’s purpose according to His choice might stand, not because of works, but because of Him who calls, it was said to her, ‘The older will serve the younger’.
From the same article ...
The message of the Bible is that all of us deserve the eternal wrath of God for our sins (Romans 3:10-18,23; 6:23). The message of the gospel is that God has provided a solution for the sins of man. That solution is the sacrifice of Jesus Christ upon the cross of Calvary where He bore the punishment that we deserve. He offers us the righteousness we lack (Romans 3:21-26). It is true that those who are saved are those whom God has chosen from eternity past (Acts 13:48; 16:14; Ephesians 1:11, etc.). It is also true that all who are saved are those who have personally believed in Jesus Christ as their Substitute and their Savior. Every person who calls upon Him for salvation will be saved.
In Rebekah, we again we find another woman unable to conceive, all the while likely knowing about the promised descendants that are supposed to come through her. It took 20 years of marriage before she conceived! Unlike Sarah, however, Rebekah doesn't take matters into her own hands. Instead Isaac prays for her. And what is the result of her faithfulness that God would provide in His time? She became pregnant, with twins. And not only that - the Lord spoke to her!
Another great reminder for us that God's timing and our timing will not always match up - and it doesn't mean God has forgotten us! He who promised is faithful.
Tomorrow's readings are Genesis 25:27 - 28:5. Click here to read online.
