John Gill Commentary Exodus 35:34

"And he hath put in his heart that he may teach, both he, and Oholiab, the son of Ahisamach, of the tribe of Dan." — Exodus 35:34 (ASV)

And he has put in his heart that he may teach
Instruct others in the things he had knowledge of; the Lord not only gave him gifts of wisdom, understanding, and knowledge, to devise and contrive curious works, and how to perform them, but gave him a capacity, and inclined his mind to teach others, how to work these works.

For not all that have knowledge have a capacity and a will to teach others also; this is of God:

[both] he, and Aholiab, the son of Ahisamach, of the tribe of Dan ;
who was joined with him as a companion and assistant in the same service; him the Lord also qualified, both to devise things, and to teach them others; of this man, (See Gill on Exodus 31:6).