בֶּן־שָׁנָ֖ה שָׁא֣וּל בְּמָלְכ֑וֹ וּשְׁתֵּ֣י שָׁנִ֔ים מָלַ֖ךְ עַל־יִשְׂרָאֵֽל׃
Saul was a—years old when he began to reign; and two years he reigned over Israel.
Read kabbalistic (mystical) interpretation of I Samuel 13:1: and classical mystical sources.