In general, digging in the Bible means applying your own mind, your own faculties to find or create spiritual things. This is reflected in our everyday language; we often speak of investigators “digging for the truth.” In most cases, the idea of digging is connected with wells, and to dig a well means to investigate the Lord’s Word and draw ideas from it. In a more negative sense, a pit – which is like a well but with no water – represents falsity, so to dig a pit represents using your intellect to fabricate falsities. Finally, there is the idea of digging through walls in order to steal from others, which represents doing evil in a cunning and concealed way, invading someone’s life and attacking their desires for good and concepts of truth.

In Genesis 26:18, to dig signifies to open.