Galatians 6:2 and 6:5 create an apparent tension that the Greek resolves. Verse 2 says "Bear ye one another's burdens" using the word baros β a crushing, extraordinary weight. Verse 5 says "every man shall bear his own burden" using the word phortion β the pack each person is designed to carry. The difference matters for caregivers: there is a weight that belongs to each person and is their own to carry (their choices, their growth, their spiritual life), and there is a crushing weight that belongs to nobody alone and is meant to be shared. Caregiver exhaustion often comes from carrying someone's phortion alongside their baros.
Isaiah 40:28β29 addresses directly the question of God's capacity when human capacity is spent: "Hast thou not known? hast thou not heard, that the everlasting God, the LORD, the Creator of the ends of the earth, fainteth not, neither is weary?" The one you are caring for is held by a God who does not grow tired. You are carrying what you can carry. God is carrying what you cannot.
Commentary is from a charismatic Protestant perspective, drawing on KJV text and public-domain sources including Spurgeon, Andrew Murray, and Matthew Henry.