Henry B. Eyring has been in the First Presidency of The Church of Jesus Christ of Latter-day Saints since October 6, 2007. He initially served as the second counselor from October 6, 2007, until January 2, 2018, and then as the first counselor from January 14, 2018, until at least October 14, 2025.
This means as of October 2025, he has been in the First Presidency for approximately 18 years.