19 And there came a scribe, and said unto him, Teacher, I will follow thee whithersoever thou goest.
20 And Jesus saith unto him, The foxes have holes, and the birds of the heaven have nests; but the Son of man hath not where to lay his head.
21 And another of the disciples said unto him, Lord, suffer me first to go and bury my father.
22 But Jesus saith unto him, Follow me; and leave the dead to bury their own dead. Mt 8
I see the the Lord knowing their inward motives here.
The scribe declares to Him “I will follow you wherever”, maybe thinking of the greatness that lay ahead for him by offering his skills to this Rabbi. The Lord busted his bubble and let him know that He owned nothing, not even a place to lay His head. There was none of the greatness or prestige that the scribe desired to be had by following Christ.
The disciple requests “let me go do this first”, perhaps maybe even having doubts or procrastinating, His Lord tells him no, it's not your problem, there's others that will do that, “you follow me”, much the same way He said it to Peter in Jn 21:22.
I place the emphasis for the lesson here on the one says “I will follow”, the other says “let me first go”. Christ, knowing their hearts, rejects the first but keeps the second.
jmho