What does Daniel 9:10 mean?

Daniel describes Israel as disobedient to the Lord God. When Israel first came into the Promised Land, they were offered blessings for obedience (Deuteronomy 28:1–6; 30:15–18). They were also warned of drastic consequences for rebellion (Deuteronomy 28:48–50, 63–64; 29:25). Among those dangers was capture and scattering by other nations. This is exactly what happened to the Jewish people, first under Assyria and then by Babylon (2 Kings 17:1–8; Jeremiah 25:7–11; Daniel 1:1–7). In this passage, Daniel prays that this exile will soon end (Daniel 9:1–9).

Here, the "laws" are more than just legal requirements. This refers to any of the instructions given to the people by God. Those commands would have been given by His chosen spokesmen: the prophets. An early example of this was Moses. In Deuteronomy 28:1–6, the Lord gave Israel instructions through Moses. He told the people what they should do to invoke His blessings. He also told them what would bring His curses on them (Deuteronomy 28:48–50; 29:25).

Near the end of his life, Joshua, who faithfully followed the Lord, challenged the people of Israel to choose to honor their God. First, he warned them that the Lord's anger would be kindled against them and they would be uprooted from the Promised Land if they disobeyed the Lord's covenant (Joshua 23:16). Then he challenged them to "choose this day whom you will serve, whether the gods your fathers served in the region beyond the River, or the gods of the Amorites in whose land you dwell. But as for me and my house, we will serve the LORD" (Joshua 24:15).