New Revised Standard Version
The sons of Samuel: Joel his firstborn, the second Abijah.

Contemporary English Version
Samuel was the father of Joel and Abijah, born in that order.

New American Bible
The sons of Samuel were Joel, the firstborn, and Abijah, the second.

Douay-Rheims Bible
The sons of Samuel: the firstborn Vasseni, and Abia.

The sons of Samuel: the firstborn Vasseni, and Abia.

firstborn.

1 Chronicles 5:1 Now the sons of Ruben the firstborn of Israel, (for he was his firstborn: but forasmuch as he defiled his father's bed, his first birthright was given to the sons of Joseph the son of Israel, and he was not accounted for the firstborn.

Leviticus 27:26 The firstborn, which belong to the Lord, no man may sanctify and vow: whether it be bullock, or sheep, they are the Lord's.

Genesis 14:20 And blessed be the most high God, by whose protection, the enemies are in thy hands. And he gave him the tithes of all.

Here there is an ellipsis of the name of the firstborn, which the margin correctly supplies as Joel. The word {Vashni} when otherwise pointed means second, so that the verse more properly reads And the sons of Samuel; the firstborn (Joel) and the second Abiah.

Vashni.

1 Chronicles 6:33 And these are they that stood with their sons, of the sons of Caath, Hemam a singer, the son of Joel, the son of Sammuel,

1 Samuel 8:2 Now the name of his firstborn son was Joel: and the name of the second was Abia, judges in Bersabee.

Joel.