In the beginning God created the heaven and the earth.
In the beginning; - that is the beginning of time; for from eternity, Jehovah himself subsisted in his threefold character of Persons, revealed in Scripture, under the sacred names of Father, Son, and Holy Ghost. In proof of this his eternal power and Godhead, see Genesis 21:33; Psalms 90:2; Deuteronomy 33:27; Isaiah 44:6; Revelation 1:17; Revelation 1:17, etc.
God created, - that is, the three Divine Persons in one God, here spoken of as God in the plural number, in the Hebrew. In proof of the Godhead of each person, first consult 1 Corinthians 8:6; John 1:1-3; Job 26:13. And then, in further proof, that in this threefold distinction of Persons, there is but One in unity of the Divine Essence, consult 1 John 5:7; Matthew 28:19; Matthew 28:19; 2 Corinthians 13:14.