Betach – trust (בטח) "In God, whose word I praise, in God I have put my trust." The word  "trust" here is better translated "to cling", as with the closely related word avatiyach (watermelon, אבטיח – notice the shared root letters). Even though a watermelon is huge (just as our worries can seem), it still clings to the vine for its nourishment. We may not see God, but cling to Him, for He's our strength and our life-nourishment.