'Fountain of Living Waters' in the Bible

For two evils hath My people done, Me they have forsaken, a fountain of living waters, To hew out for themselves wells -- broken wells, That contain not the waters.

The hope of Israel is Jehovah, All forsaking Thee are ashamed, And 'My apostates' in the earth are written, For they have forsaken Jehovah, A fountain of living waters.