The rainbow symbolizes the pact that G-d made with Noach never again to destroy the world with water. They need a constant helping hand, constant encouragement. They can be bold, but only when Daddy is close by. When he's out of sight, tears quickly replace bravado until once again they feel the hand that comforts. As babies, our first faltering steps are greeted by parental glee.
Hands reach out to guide our every step.
When we stumble, Mom and Dad are always there to stop us from falling. There comes a day, however, when we stumble, but we find no helping hand. We fall to the ground. Tears fill our eyes and dismay fills our hearts. We look around in amazement.