And it came to pass, when God (Elohim) caused me to wander from my father’s house, that I said unto her, This is thy kindness which thou shalt shew unto me; at every place whither we shall come, say of me, He is my brother. – Genesis 20:13
Because the verb is here put in the plural number, I freely expound the passage as referring to the angels, who led Abraham through his various wanderings. Some, with too much subtlety, infer from it a Trinity of Persons: as if it had been written: The gods caused me to wander. I grant, indeed, that the noun אלהים (Elohim,) is frequently taken for God in the Scripture: but then the verb with which it is connected is always singular. Wherever a plural verb is added then it signifies angels or princes.
Source: Calvin’s Commentary on the Bible