One weaver at Mathurā addressed Kṛṣṇa in this way: "My dear King of Vṛndāvana, I have become so proud of Your causeless mercy upon me that I do not even count upon the mercy of the Lord of Vaikuṇṭha, which is sought after by many great sages in deep meditation." In other words, although the yogīs and great sages sit in meditation upon Lord Viṣṇu, who is residing in Vaikuṇṭha, a devotee of Kṛṣṇa is so proud that he does not consider such meditation to be very valuable. This feeling of pride is due to one's having achieved the highest goal of life—Kṛṣṇa.
Doubt
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.
Apprehension
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.