O Lord, what shall I say,.... For the comfort and encouragement of the people of Israel, in vindication of thy power and faithfulness, and against the charge of weakness in thyself, unfaithfulness to thy promises, and unkindness to thy people, brought by our enemies:
when Israel hath turned their backs before their enemies? or after they have done it; what is to be said now, this being the case? he speaks as a man confounded, and at the utmost loss how to account for the power, the providence, and promises of God.

The question which Joshua addresses to God he introduces in this way: "Pray (בּי contracted from בּעי), Lord, what shall I say?" to modify the boldness of the question which follows. It was not because he did not know what to say, for he proceeded at once to pour out the thoughts of his heart, but because he felt that the thought which he was about to utter might involve a reproach, as if, when God permitted that disaster, He had not thought of His own honour; and as he could not possibly think this, he introduced his words with a supplicatory inquiry. What he proceeds to say in Joshua 7:8, Joshua 7:9, does not contain two co-ordinate clauses, but one simple thought: how would God uphold His great name before the world, when the report that Israel had turned their back before them should reach the Canaanites, and they should come and surround the Israelites, and destroy them without a single trace from off the face of the earth.
(Note: Calovius has therefore given the correct interpretation: "When they have destroyed our name, after Thou hast chosen us to be Thy people, and brought us hither with such great wonders, what will become of Thy name? Our name is of little moment, but wilt Thou consult the honour of Thine own name, if Thou destroyest us? For Thou didst promise us this land; and what people is there that will honour Thy name if ours should be destroyed?")
In the words, "the Canaanites and all the inhabitants of the land," there is involved the thought that there were other people living in Canaan beside the Canaanites, e.g., the Philistines. The question, "What wilt Thou do with regard to Thy great name?" signifies, according to the parallel passages, Exodus 32:11-12; Numbers 14:13., Deuteronomy 9:28, "How wilt Thou preserve Thy great name, which Thou hast acquired thus far in the sight of all nations through the miraculous guidance of Israel, from being misunderstood and blasphemed among the heathen?" ("what wilt Thou do?" as in Genesis 26:29).

What shall I say - In answer to the reproaches of our insulting enemies. When Israel - God's people, which he hath singled out of all nations for his own.