1 Kings 19 is the most extended portrait of ministry burnout in Scripture. Elijah had just achieved the most dramatic public vindication of any prophet — fire from heaven, 450 prophets of Baal destroyed — and then ran from a single woman's threat, lay down under a juniper tree, and asked God to let him die. He said "I have been very jealous for the LORD God of hosts: and I, even I only, am left." God's response involved no rebuke, no sermon, no theological correction of his distorted perspective. Food. Sleep. Food again. Rest. The body was addressed before the mission was addressed.
Matthew 11:29–30 contains Jesus' description of his yoke as "easy" and his burden as "light" — the Greek chrestos means well-fitting, suited to the wearer, not causing unnecessary abrasion. The contrast is with yokes that fit poorly and grind. Many pastors are carrying a poorly-fitting yoke — not the one Jesus described. The question in burnout is not whether ministry is too much but whether the specific structure being carried is the one Jesus designed.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.