I've usually skipped over the first chapter of Matthew when I've read it. I didn't feel it necessary to discect the geneology of Jesus. I believed it, and was fine with that. This time, I decided to take the time to dig in a little deeper. Why did Matthew include this in his Gospel account? Is there anything else to take away besides proving Jesus' bloodline from David?
Take a minute and check out vs. 3-6. Notice the four people mentioned in parentheses? All four of these women were involved in sexual sin. Each of them gave birth to a son that continued the line to the birth of our Savior Jesus Christ.
In verse 6, Matthew mentions Uriah's wife (Bathsheba) as the mother of Solomon, David's son. Bathsheba seduced David into sleeping with her, and eventually David sent Uriah to the front line of battle to be killed in effort to cover his sin. Check out 2 Samuel 11-12 to get the whole picture.
The inclusion of these four people communicates something amazing to us. God uses sinners to accomplish his will.
David and Bathsheba's sin didn't prevent God from sending his son.
In the same way, our sins do not make us incapable of being used by God. Know today that you are forgiven yesterday, today, and tomorrow, and that God still wants to use you.

Matthew 1:3-6