After Lord Brahmā had stolen all of the calves, cows and cowherd boys from Kṛṣṇa, he was trying to go away. But all of a sudden he became doubtful about his stealing affairs and began to watch on all sides with his eight eyes. Lord Brahmā has four heads, and therefore he has eight eyes. This is an instance of ecstatic love in doubtfulness, caused by stealing.
Similarly, just to please Kṛṣṇa, Akrūra stole the Syamantaka-maṇi, a stone which can produce unlimited quantities of gold, but later on he repented his stealing. This is another instance of ecstatic love for Kṛṣṇa in doubt caused by stealing.
The King of heaven, Indra, was advised to surrender himself at the lotus feet of Kṛṣṇa when he was causing torrents of rain to fall on the land of Braja. At that time Indra's face became very darkened out of doubtfulness.
When a person becomes disturbed in his heart by seeing lightning in the sky, by seeing a ferocious animal, or by hearing a tumultuous sound, his state of mind is called apprehensive. In such a state of apprehension, one tries to take shelter of something which provides safety. There may be standing of the hairs on the body, trembling of the body and sometimes the committing of mistakes. And sometimes the body may become stunned.
In the Padyāvalī there is the following statement: "My dear friend, Kṛṣṇa's residence in the demonic circle at Mathurā, under the supremacy of the King of demons, Kaṁsa, is causing me much worry." This is one instance of apprehending some danger to Kṛṣṇa in ecstatic love for Him.
When Vṛṣāsura appeared in Vṛndāvana as a bull, all of the gopīs became greatly affected with fear. Being perturbed in that way, they began to embrace the tāmala trees. This is an instance of fearfulness caused by a ferocious animal and of the search for shelter while remembering Kṛṣṇa in ecstatic love. Upon hearing the jackals crying in the forest of Vṛndāvana, Mother Yaśodā sometimes became very careful about keeping Kṛṣṇa under her vigilance, fearing that Kṛṣṇa might be attacked by them. This is an instance of ecstatic love for Kṛṣṇa in fearfulness caused by a tumultuous sound. This kind of fearfulness is a little different from being actually afraid. When one is afraid of something, he can still think of past and future. But when there is this kind of ecstatic apprehension, there is no scope for such thinking.