Where one party only is bound to do a certain thing that contract is called unilateral, or one-sided; and where both parties are bound to perform certain things, the contract is called bilateral, or two-sided.
[101]It will be observed that this oathbound covenant that Jehovah made with Abraham contained no conditions or limitations, but was merely a promise of Jehovah bound by his oath, and is therefore properly called a unilateral or one-sided covenant; for the reason that God's purpose was and is to carry out his plan to bless the human race, regardless of what any one may or may not do.

There was no need for him to make any conditions to the covenant.

He merely announced his benevolent purpose toward mankind.

The covenant does not even say that the blessing of the people will follow upon the condition that Abraham should do a certain thing, or that the people should seek him.

The covenant does not say that every person will be blessed with life everlasting; but it does say that all the families of the earth shall be blessed, which means that every one must in God's due time have a full, fair opportunity for life everlasting.