Whose perseverance does James 5:11 mention?

Answer: Job

"You have heard of Job's perseverance (KJV: patience) and have seen the outcome from the Lord. The Lord is full of compassion and mercy."

“See how blessed we consider those who have persevered. You have heard of Job’s perseverance and have seen the outcome from the Lord. The Lord is full of compassion and mercy.”— James 5:11 (BSB)