Biblical Reference:
The phrase "digging through the wall" is primarily associated with the prophetic vision of Ezekiel, as recorded in the Book of Ezekiel. This event is detailed in Ezekiel 8:7-12, where the prophet is instructed by God to dig through a wall to reveal the hidden abominations being committed by the elders of Israel.

Context and Background:
Ezekiel, a prophet during the Babylonian exile, was called by God to deliver messages of judgment and hope to the Israelites. The vision of digging through the wall occurs in a series of visions where God reveals to Ezekiel the idolatrous practices of the Israelites, which were hidden from public view but known to God.

Scriptural Account (Ezekiel 8:7-12):
"Then He brought me to the entrance to the court, and I looked and saw a hole in the wall. 'Son of man,' He told me, 'dig through the wall.' So I dug through the wall and discovered a doorway. And He said to me, 'Go in and see the wicked abominations they are committing here.' So I went in and looked, and I saw all kinds of crawling creatures and detestable beasts, along with all the idols of the house of Israel, carved all around the wall. Seventy elders of the house of Israel were standing before them, with Jaazaniah son of Shaphan standing among them. Each had a censer in his hand, and a fragrant cloud of incense was rising. 'Son of man,' He said to me, 'do you see what the elders of the house of Israel are doing in the darkness, each at the shrine of his own idol? For they are saying, "The LORD does not see us; the LORD has forsaken the land."'"

Theological Significance:
The act of digging through the wall symbolizes the uncovering of hidden sins and the exposure of spiritual corruption among the leaders of Israel. It serves as a powerful metaphor for God's omniscience and His ability to see beyond outward appearances into the hidden recesses of the human heart. The vision underscores the theme of divine judgment against idolatry and unfaithfulness, which were rampant among the Israelites despite their outward religious observances.

Symbolism and Imagery:
The wall represents a barrier that conceals the true spiritual state of the people. By instructing Ezekiel to dig through it, God reveals the depth of Israel's apostasy. The imagery of crawling creatures and detestable beasts further emphasizes the grotesque nature of their idolatry, contrasting sharply with the holiness and purity that God demands.

Application for Believers:
This passage serves as a sobering reminder of the dangers of hidden sin and the importance of spiritual integrity. It calls believers to examine their own lives for any concealed transgressions and to live transparently before God, who sees all. The vision also highlights the responsibility of spiritual leaders to lead with righteousness and to avoid the pitfalls of hypocrisy and idolatry.

Historical and Cultural Context:
During Ezekiel's time, the Israelites were influenced by the surrounding pagan cultures, leading to the incorporation of idolatrous practices into their worship. The elders' actions in the vision reflect a syncretism that was prevalent, as they attempted to blend the worship of Yahweh with that of other deities. This syncretism was a direct violation of the covenant relationship between God and Israel, which demanded exclusive worship and obedience.

Conclusion:
While the vision of digging through the wall is specific to the historical context of Ezekiel's ministry, its lessons are timeless. It challenges individuals and communities to confront hidden sins, to repent, and to return to a faithful relationship with God.