1 Corinthians 3:2
I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able.
1 Corinthians 9:7
Who goeth a warfare any time at his own charges? who planteth a vineyard, and eateth not of the fruit thereof? or who feedeth a flock, and eateth not of the milk of the flock?