וַיֹּ֥אמֶר אִישׁ־הָאֱלֹהִ֖ים אָ֣נָה נָפָ֑ל וַיַּרְאֵ֙הוּ֙ אֶת־הַמָּק֔וֹם וַיִּקְצָב־עֵץ֙ וַיַּשְׁלֶךְ־שָׁ֔מָּה וַיָּ֖צֶף הַבַּרְזֶֽל׃
And the man of God said: ‘Where fell it?’ And he showed him the place. And he cut down a stick, and cast it in thither, and made the iron to swim.
Read Kabbalistic (mystical) interpretations of II Kings 6:6: Zohar and classical Jewish mystical sources, free online.