Actually, the Caitanya-caritāmṛta is not intended for the novice, for it is the postgraduate study of spiritual knowledge. Ideally, one begins with the Bhagavad-gītā and advances through Śrīmad-Bhāgavatam to the Caitanya-caritāmṛta. Although all these great scriptures are on the same absolute level, for the sake of comparative study the Caitanya-caritāmṛta is considered to be on the highest platform. Every verse in it is perfectly composed.
In the second verse of the Caitanya-caritāmṛta, the author offers his obeisances to Lord Caitanya and Lord Nityānanda. He compares Them to the sun and the moon because They dissipate the darkness of the material world. In this instance the sun and the moon have risen together.