Genesis 25:7
And these are the days of the years of Abraham’s life which he lived, an hundred threescore and fifteen years.
Cross-reference
Genesis 25:17 uses the same formulaic lifespan record for Ishmael: age given, then death noted. The pattern echoes from Abraham to his son.
Genesis 12:4 notes Abraham's age at his calling, providing context for his lifespan ending at 175 in Genesis 25:7.
Genesis 15:15 is God's promise that Abraham would die 'in a good old age.' Genesis 25:7 records that promise fulfilled — 175 years.
Genesis 35:28 gives Isaac's lifespan (180 years) using the same formula — patriarch age record repeated for the next generation.
Genesis 35:29 mirrors this passage: Isaac 'gave up the ghost and died... and was gathered unto his people' — same death formula as Abraham.
In Genesis 47:9, Jacob calls his own life 'few and evil' compared to his fathers' years — Abraham's 175 is the benchmark Jacob measures against.