2 Kings 2:2

2. Tarry here Why should Elijah thus exhort Elisha? Some think, to prove his fidelity and love; but others, with greater probability, think that Elijah wanted no human eye to witness his departure from the world, and that feelings of deep humility prompted this request.

I will not leave thee Elisha seems to have had a revelation, or at least a premonition, that his master was about to be taken away from him that day, and “no dread of that final parting could deter him from the mournful joy of seeing with his own eyes the last moments, and of hearing with his own ears the last words, of the prophet of God.” Stanley.