Verses with the word lump in the New Testament (5 verses):

Romans 9:21
Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour?

Romans 11:16
For if the firstfruit be holy, the lump is also holy: and if the root be holy, so are the branches.

1 Corinthians 5:6
Your glorying is not good. Know ye not that a little leaven leaveneth the whole lump?

1 Corinthians 5:7
Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us:

Galatians 5:9
A little leaven leaveneth the whole lump.