וַיֹּ֣סֶף יְהוָ֗ה קְרֹ֣א עוֹד֮ שְׁמוּאֵל֒ וַיָּ֤קָם שְׁמוּאֵל֙ וַיֵּ֣לֶךְ אֶל־עֵלִ֔י וַיֹּ֣אמֶר הִנְנִ֔י כִּ֥י קָרָ֖אתָ לִ֑י וַיֹּ֛אמֶר לֹֽא־קָרָ֥אתִי בְנִ֖י שׁ֥וּב שְׁכָֽב׃
And the LORD called yet again Samuel. And Samuel arose and went to Eli, and said: ‘Here am I; for thou didst call me.’ And he answered: ‘I called not, my son; lie down again.’
Read Kabbalistic (mystical) interpretations of I Samuel 3:6: Zohar and classical Jewish mystical sources, free online.