'Follow Me' in the Bible

And after these things He came out, and saw a publican, by name Levi, sitting at the toll, and He said to him, Follow me.

And He spoke to all, If any one wishes to come after me, let him deny himself, and take up his cross daily, and follow me.

And Jesus hearing these things, said to him, Still one thing is lacking to thee: Sell all things whatsoever you have, and give to the poor, and you shall have treasure in heaven: and come, follow me.