That is the difference between God and the living entity. We had our past life, because dehāntara-prāptiḥ (BG 2.13), we have changed our body. And we shall change this body also. after annihilation of this body.... Vāsāṁsi jīrṇāni yathā vihāya (BG 2.22). Old garments, old cloth, when it is too old, unuseable, then we give it up. We accept another new cloth. Similarly, when this body becomes unuseable, then we change our body. We get another new body. This is the way of transmigration of the soul. This is a fact.
- dehino 'smin yathā dehe
- kaumāraṁ yauvanaṁ jarā
- tathā dehāntara-prāptir
- dhīras tatra na muhyati
- (BG 2.13)
So dehāntara-prāptiḥ is there. But we have forgotten what I was in my last life. That I cannot say. Neither I can say what kind of body I am going to get next. That I cannot say. Our knowledge is so imperfect that we cannot say. But Kṛṣṇa can say past, present, and future. It is said here, tāny ahaṁ sarvāṇi. Everything. Sarvāṇi means, "I veda..." Sarvāṇi means past, present, and future.