'I have made a covenant with mine eyes,' said that extraordinary man--that extraordinarily able, honest, exposed and exercised man.

Now, you must all know what a covenant is.

A covenant is a compact, a contract, an agreement, an engagement.

In a covenant two parties come to terms with one another.

The two covenanters strike hands, and solemnly engage themselves to one another: I will do this for you if you will do that for me.