say to Peter when describing what love for the Lord looks like...
Feed My lambs.
Take care of My sheep.
Feed My sheep.
Seeing as we read in John 17:20, "I am praying not only for these disciples but also for all who will ever believe in me through their message", it seems reasonable this message is for believers today as well, and we too are called to nourish young believers, look after and care for others, and nourish one another.
It seems we aren't called to go back to our old ways of doing things, but instead continue on WITH Him, FOR Him.