“Early the next morning they arose and worshiped before the Lord and then went back to their home at Ramah. Elkanah made love to his wife Hannah, and the Lord remembered her. So in the course of time Hannah became pregnant and gave birth to a son. She named him Samuel, saying, ‘Because I asked the Lord for him.'” -1 Samuel 1:19-20
As we open in the book of 1 Samuel, we see a barren Hannah crying out to her Heavenly Father. A priest sees her in all of her affliction and speaks a blessing over her for a child. Instead of sitting in doubt and agony, waiting for a blessing to show up in the way she wanted it to, we see Hannah change her focus in verse 19 to a posture of praise.
When worship happens, the door to the throne room of heaven opens. Hannah had not yet conceived at this point, but she chose in trust to believe that God was faithful to fulfill His promises.
In verse 20, the author puts emphasis on the fact that Hannah became pregnant in the course of time, meaning it didn’t happen immediately. In that timing, the Lord created a strong foundation to raise an important man to the story of Israel. Eventually, the promise was fulfilled, and Samuel was positioned into the perfect time to live out his specific calling.