'Spring' in the Bible

“So let us know, let us press on to know the Lord.His going forth is as certain as the dawn;And He will come to us like the rain,Like the spring rain watering the earth.”

Though he flourishes among the reeds,An east wind will come,The wind of the Lord coming up from the wilderness;And his fountain will become dryAnd his spring will be dried up;It will plunder his treasury of every precious article.