Holiness and Union with Christ
"The ark with the mercy seat was the important symbol of the Lord's presence with His people and the visible reminder of the necessity of the atonement. It was only as Israel's army remained in union with the ark that they saw Jericho fall. This was the first and most important lesson for Israel to learn as they began their journey into the Promised Land. So, it is in sanctification that the power for victory resides in the Lord. Sin is far stronger than any Christan, but it is not stronger than Christ." (Barret, A Radical, Comprehensive Call to Holiness, 66).