In everything we do, in every aspect of our lives, in our thinking and our feelings, all areas, we need to infuse those areas with the Light of God. If we do that, we will experience a wonderful sense of joy. This quality is valued by the angels because it is so very special when humanity uses its free will to replace the energy of darkness with the Light of God, especially out of love. Each time a person does this in his or her own life, it is cause for the angels to rejoice.
Time and space are the very music of God's harp, for each moment in time is empty of other moments, and each part of space is empty of other parts, so that we will not have to hear too much at once. That is why there are seasons.