The rainbow is the sign of peace and deliverance.
Peace is a deep quietude where no disturbance can come — a quietude with a sense of established security and release.
In complete silence there are either no thoughts or thoughts come, but they are felt as something coming from outside and not disturbing the silence.
Silence of the mind, peace or calm in the mind are three things that are very close together and bring each other.
Peace is more positive than calm — there can be a negative calm which is merely an absence of disturbance or trouble, but peace is always something positive bringing not merely a release as calm does but a certain happiness or Ananda of itself.
The peace and patience go together. By having patience under all kinds of pressure you lay the foundations of peace.
It is the quiet and spontaneous action that is the characteristic divine action. The aggressive action is only, as you say, when there is resistance and struggle. This does not mean that the quiet force can't be intense. It can be more intense than the aggressive, but its intensity only increases the intensity of the peace.
It is on the Silence behind the cosmos that all the movement of the universe
It is from the Silence that the peace comes; when the peace deepens and deepens, it becomes more and more the Silence.
In a more outward sense the word Silence is applied to the condition in which there is no movement of thought or feeling etc., only a great stillness of the mind.
But there can be an action in the Silence, undisturbed even as the universal action goes on in the cosmic Silence.