NIV Deuteronomy 16:21
Do not set up any wooden Asherah pole next to the altar you will build for the LORD your God.
Why is this ponderable?
Whether we know him as Yahweh, Allah or God, the people of the great Abrahamic religions, are agreed: There is only one of Him. So, how do we account for the wooden Asherah pole or tree traditionally placed next to alters dedicated to Yahweh by the Jews that settled in the ancient Canaanite city of Ugarit. Ancient texts, amulets and figurines unearthed primarily in the ancient city indicate that Asherah was worshiped as a powerful fertility goddess right along with Yahweh.
Asherah's connection to Yahweh, is spelled out in both the Bible and an 8th-century B.C. inscription on pottery found in the Sinai desert at a site called Kuntillet Ajrud.
The inscription is a petition for a blessing. Crucially, the inscription asks for a blessing from 'Yahweh and his Asherah.' In those times, Yahweh and Asherah were viewed as a divine pair.
Why do most passages in the Hebrew Bible seem to refer to an object rather than a deity?
In the ancient Near East it was common for deities to be represented by objects (i.e., a cult symbol). These objects were a physical manifestation of the deity and enabled the people to worship the deity in effigy. Asherah’s cult symbol was a living tree or a consecrated wooden pole.
The vast majority of references to Asherah in the Hebrew Bible are found in the Deuteronomistic History (Joshua, Judges, Samuel, and Kings), and one of the most important themes in these books is the rejection of other gods. One way the author(s) of the Deuteronomistic History could demean Asherah is by referring to her cult symbol rather than her name, thereby transforming her from a goddess to an object that could be discarded.
In the Deuteronomistic History, kings were often evaluated by how they responded to Asherah worship, which was apparently widespread among the Israelites. Evil kings, such as Jeroboam and Rehoboam, fostered Asherah worship (1Kgs 14:15, 1Kgs 14:23), and Ahab and Jezebel officially endorsed and promoted her cult (1Kgs 18:19). Yet, good kings, such as Asa, Josiah, Jehoshaphat, and Hezekiah (also Gideon the judge) attempted to eradicate Asherah worship (e.g., Judg 6:25-30, 1Kgs 15:13, 2Kgs 21:7). Despite these efforts, Israelites remained devoted to Asherah (Isa 27:9, Jer 17:1, Mic 5:14), which indicates that the beliefs expressed in the Deuteronomistic History are not the ones that governed popular practice.