Why?
Instead of a river, God often gives us a brook - which may be running today, and dried up tomorrow.
Why?
To teach us not to rest in our blessings - but in the blesser Himself.
"Hold me up - and I shall be safe!" Psalm 119:117
"So do not fear - for I am with you! Do not be dismayed - for I am your God. I will strengthen you and help you; I will uphold you with My righteous right hand!" Isaiah 41:10