For me, when I got saved in 1973 at age 19, the internal difference that was manifested in my outward actions was so glaring it was hard for me (and others) to not help but notice. But, I did struggle a bit.
Yeshua would have instructed His disciples, in this as well as other things, regarding what they would need to know after He was gone. He would not allow them to think one thing … only for them to find out something different later on.
Both Abel and Yeshua are wonderful examples and role models as to how to hang in there and stay faithful to the end. Neither of them saw, as we now see, the lasting fruit of their lives. But yet, being “dead” they still speak.