Deuteronomy 34:8
7 Moses was 120 years old when he died, but his eye was not dull nor had his vitality departed. 8 The Israelites mourned for Moses in the rift valley plains of Moab for thirty days; then the days of mourning for Moses ended. 9 Now Joshua son of Nun was full of the spirit of wisdom, for Moses had placed his hands on him; and the Israelites listened to him and did just what the Lord had commanded Moses.
LXX Deuteronomy 34:8
7 And Moses was one hundred and twenty years at his death; his eyes were not dim or ruined. 8 And the sons of Israel wept for Moses at Araboth of Moab, on the Jordan, down from Jericho, for thirty days, and the days of grief of weeping for Moses came to an end. 9 And Joshua son of Nun was filled with a spirit of understanding, for Moses put his hands on him, and the sons of Israel listened to him, and they did as the Lord commanded Moses.
Notes and References
"... In Deuteronomy 34:8, the Septuagint plus “on the Jordan across from Jericho” has parallels in Numbers 26:3, 63; 31:12; 33:48; and 36:13 and can be understood as an alignment with the stereotyped phrase “in the plains of Moab on the Jordan across from Jericho” in the final third of the book of Numbers. In this case, the LXX of Deuteronomy 34 reflects what could be called a “Pentateuch-oriented variant.” A similar “Pentateuch-oriented variant” is found in verse 9 in the Samaritan Pentateuch ..."
Germany, Stephen "The Attestation of the Book-Seam between Deuteronomy and Joshua in the Early Textual Witnesses" in Berner, Christoph, et al. (eds.) Book-Seams in the Hexateuch I: The Literary Transition between the Books of Genesis/Exodus and Joshua/Judges (pp. 103-120) Mohr Siebeck, 2018