The number three in the Bible represents completeness. That's why Jesus rose on the third day after the Crucifixion -- his transformation was complete. It's why Elijah stretched himself on the dead child three times, why Jonah was in the belly of the fish for three days, why the Lord called Samuel three times, and many more. It's also reflected in the fact that there are three levels of heaven, three levels of hell, three levels to human life and, ultimately, three aspects of the Lord Himself: Father, Son and Holy Spirit.

3058. The reason 'drawing water' means instruction and also consequent enlightenment, as in later verses of this chapter, is that 'water in the internal sense means the truths of faith, 2702. Thus 'drawing water' is nothing else than receiving instruction in the truths of faith and so being enlightened, as is also the meaning elsewhere in the Word, as in Isaiah,

With joy you will draw water from the springs of salvation, and [you will say] or that day, Confess Jehovah. Isaiah 12:3-4.

'Drawing water' stands for receiving instruction, having intelligence, and being wise. In the same prophet,

To the thirsty bring water, O inhabitants of the land of Tema. Isaiah 21:14.

'Bringing water to the thirsty' stands for giving instruction. In the same prophet,

The wretched and the needy are seeking water, and there is none; their tongue is parched with thirst. Isaiah 41:17.

'Those seeking water' stands for those desiring instruction in truths, 'and there is none' stands for the fact that nobody had any. In addition 'drawers of water' in the Jewish Church represented those who constantly seek to know truths but to no other end than just knowing them, and who consequently pay no attention to their purpose. Such persons were rated among the lowest of all. The Gibeonites mentioned in Joshua 9:21, 23, 27, represented them.