κενόωkenoo

Romans 4:14

For if it is the adherents of the law who are to be the heirs, faith is null and the promise is void.

1 Corinthians 1:17

For Christ did not send me to baptize but to preach the gospel, and not with words of eloquent wisdom, lest the cross of Christ be emptied of its power.

1 Corinthians 9:15

But I have made no use of any of these rights, nor am I writing these things to secure any such provision. For I would rather die than have anyone deprive me of my ground for boasting.

2 Corinthians 9:3

But I am sending the brothers so that our boasting about you may not prove empty in this matter, so that you may be ready, as I said you would be.

Philippians 2:7

but emptied himself, by taking the form of a servant, being born in the likeness of men.