1st Samuel 2 and 3

Then Hannah prayed a thankful prayer to the Lord.
Eli had evil sons. His son's did really, REALLY, bad stuff. But Samuel was ministering before the LORD -a boy wearing a linen ephod. Each year his mother made him a little robe and took it to him when she went up with her husband to offer the annual sacrifice. Eli would bless Elkanah and his wife, saying, "May the LORD give you children by this woman to take the place of the one she prayed for and gave to the LORD." Then they would go home. And the LORD was gracious to Hannah; she conceived and gave birth to three sons and two daughters. Meanwhile, the boy Samuel grew up in the presence of the LORD. One day, an Angel came and said to Eli that his son's were wicked and their going to die on the same day. He also said that all his descendants will die when they're still young. Poor Eli.
So a few days Later, God called Samuel while he was in his bed. So he went to Eli. "Did you call me?"
"No" After this happened a few times, Eli Found out that it was God.So when God called again, Samuel said "Speak, for your servant is listening. God told him that all that was said about Eli would come true soon. Samuel was afraid to tell Eli. But Eli asked him and he told.Then Eli said, "He is the LORD; let him do what is good in his eyes." He takes that so well. But soon it became obvious that Samuel was gonna be the new priest.