the firstborn, Lord Brahmā — SB 4.30.50-51plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 4.30.39-40

After being born, Dakṣa, by the superexcellence of his bodily luster, covered all others' bodily opulence. Because he was very expert in performing fruitive activity, he was called by the name Dakṣa, meaning "the very expert." Lord Brahmā therefore engaged Dakṣa in the work of generating living entities and maintaining them. In due course of time, Dakṣa also engaged other Prajāpatis [progenitors] in the process of generation and maintenance.

without a beginning — SB 3.26.3plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 3.26.3

The Supreme Personality of Godhead is the Supreme Soul, and He has no beginning. He is transcendental to the material modes of nature and beyond the existence of this material world. He is perceivable everywhere because He is self-effulgent, and by His self-effulgent luster the entire creation is maintained.

without beginning — SB 3.29.45plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 3.29.45

The eternal time factor has no beginning and no end. It is the representative of the Supreme Personality of Godhead, the maker of the criminal world. It brings about the end of the phenomenal world, it carries on the work of creation by bringing one individual into existence from another, and likewise it dissolves the universe by destroying even the lord of death, Yamarāja., SB 4.11.19plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 4.11.19

My dear Dhruva, the Supreme Personality of Godhead is ever existing, but in the form of time, He is the killer of everything. He has no beginning, although He is the beginning of everything, nor is He ever exhaustible, although everything is exhausted in due course of time. The living entities are created through the agency of the father and killed through the agency of death, but He is perpetually free of birth and death., SB 7.3.30plugin-autotooltip__small plugin-autotooltip_bigŚrīmad Bhāgavatam 7.3.30

My dear lord, by your form as the Vedas personified and through knowledge relating to the activities of all the yajñic brāhmaṇas, you spread the Vedic ritualistic ceremonies of the seven kinds of sacrifices, headed by agniṣṭoma. Indeed, you inspire the yajñic brāhmaṇas to perform the rituals mentioned in the three Vedas. Being the Supreme Soul, the Supersoul of all living entities, you are beginningless, endless and omniscient, beyond the limits of time and space., Ādi 2.107plugin-autotooltip__small plugin-autotooltip_bigŚrī Caitanya-caritāmṛta, Ādi-līlā 2.107

" 'Kṛṣṇa, who is known as Govinda, is the supreme controller. He has an eternal, blissful, spiritual body. He is the origin of all. He has no other origin, for He is the prime cause of all causes.', Madhya 8.137plugin-autotooltip__small plugin-autotooltip_bigŚrī Caitanya-caritāmṛta, Madhya-līlā 8.137

" 'Kṛṣṇa, who is known as Govinda, is the supreme controller. He has an eternal, blissful, spiritual body. He is the origin of all. He has no other origin, for He is the prime cause of all causes.', Madhya 20.154plugin-autotooltip__small plugin-autotooltip_bigŚrī Caitanya-caritāmṛta, Madhya-līlā 20.154

" 'Kṛṣṇa, who is known as Govinda, is the supreme controller. He has an eternal, blissful, spiritual body. He is the origin of all. He has no other origin, for He is the prime cause of all causes.', Madhya 21.35plugin-autotooltip__small plugin-autotooltip_bigŚrī Caitanya-caritāmṛta, Madhya-līlā 21.35

" 'Kṛṣṇa, known as Govinda, is the supreme controller. He has an eternal, blissful, spiritual body. He is the origin of all. He has no other origin, for He is the prime cause of all causes.'