Luke 2:52

My meat is to do the will of him that sent me, and to finish his work.—I must work the works of him that sent me, while it is day: the night cometh, when no man can work.

Wist ye not that I must be about my Father’s business? And they understood not the saying which he spake unto them.—This sickness is not unto death, but for the glory of God, that the Son of God might be glorified thereby. Said I not unto thee, that if thou wouldest believe, thou shouldest see the glory of God?