John Gill Commentary Mark 1:17

"And Jesus said unto them, Come ye after me, and I will make you to become fishers of men." — Mark 1:17 (ASV)

And Jesus said unto them, come you after me
Leave your worldly employments, and become my disciples,

and I will make you to become fishers of men :
which will be a much more excellent and honourable employment, as men, and the souls of men, are more excellent, and of more worth than fishes; (See Gill on Matthew 4:19).