take an oath
make an oath
swear an oath

Was he Andry, to make an oath and break it?

But he could not make an oath of it.

Thomas countered that York had never made such an oath.

If you agree I think we must make an oath on it.

To fight and die as men, we make an oath.

They believe that it is wrong to make an oath or promise.

Article 16 required bishops to make an oath of loyalty to the state.

I made an oath and I have to keep it.

A person making an oath was to swear oh his near and dear ones.

They made an oath in blood, and it was done.