Three
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.
Joel 2:21-23
21
Land, don't be afraid. Be glad and rejoice, for Yahweh has done great things.
22
Don't be afraid, you animals of the field; for the pastures of the wilderness spring up, for the tree bears its fruit. The fig tree and the vine yield their strength.
23
"Be glad then, you children of Zion, and rejoice in Yahweh, your God; for he gives you the former rain in just measure, and he causes the rain to come down for you, the former rain and the latter rain, as before.
