God’s Word to the Old Testament Patriarchs.
Adam and Eve: It was God’s custom to speak with them during the cool of the day - Genesis 3:8.
Noah: God told Noah to build an ark - Genesis 6:13-14.
Abraham: God told him to leave his home - Genesis 12:1
Isaac: God told him to dwell in the land - Genesis 26:3-6
Jacob: He was told that he would come back to the land - Genesis 28:1-5
Joseph: God spoke to Joseph in dreams in preparation bring the 12 tribes of Israel to Egypt for 430 years.
God communicated with all of the patriarchs with His spoken voice, through dreams, visions, etc. His Word to all of these individuals served as a guiding influence in their lives to bring the nation of Israel into existence.
Through out the Old Testament God continued to speak to His people through His prophets.
Hebrews 1:1 God, who at various times and in various ways spoke in time past to the fathers by the prophets,