It may be helpful to start verse 10 with something like “Moses continued to speak to the Israelites.”

Moses tells of another forty days and forty nights he stayed on the mountain (see 9.9).

The LORD hearkened to me at that time also: again the LORD answered his prayer. And as a consequence of Moses’ prayer, the LORD was unwilling to destroy you (see 9.26 and similar passages). This can be rendered “the LORD agreed not to destroy you,” or “the LORD decided not to….”

Quoted with permission from Bratcher, Robert G. and Hatton, Howard A. A Handbook on Deuteronomy. (UBS Helps for Translators). New York: UBS, 2000. For this and other handbooks for translators see here .