Amos spoke to the whole of Israel, all twelve families or tribes. Using the metaphor of a husband, the Lord reminded Israel that He had chosen no other (see Amos 3:2; Deuteronomy 7:6). He spoke of Himself as a faithful husband and reminded Israel of her covenant relationship with Him (see Jeremiah 3:19–20). In verse 3 He asked Israel to remember the need for unity in her relationship with Him. It is necessary, if they are to walk together, for them to be in agreement. The images are all chosen to express the same thing: God, has foreknowledge of all calamities (see vv. 2–6), but He never sends a calamity unless He first notifies His prophet of it (see v. 7; see also 2 Nephi 30:17; Jacob 4:8). Prophecy comes by direct revelation. God has knowledge of all His children and their doings and justly warns and threatens with His judgments. The fact that the prophets prophesy correctly is an indication that they are in communion with God and that they do indeed walk together.
Amos 3:7is a clear statement concerning the role of prophets. President N. Eldon Tanner said: “There are many scriptures which assure us that God is as interested in us today as he has been in all his children from the beginning, and thus we believe in continuous revelation from God through his prophets to guide us in these latter days. The Prophet Amos said, ‘Surely the Lord God will do nothing, but he revealeth his secret unto his servants the prophets.’” (In Conference Report, Apr. 1975, p. 52.)