guarded.

Let us take another example. Suppose I have a friend who is addicted to
the excessive drinking of strong liquor, and I say to him: "If you give
up that detestable habit for one year, I will make you a present of this
beautiful house worth several thousand dollars. It will be yours as long
as you live, and at your death you may leave it to your children. I do
not owe you anything, but offer this as a free gift if you comply with
my request." My friend accepts the offer on these conditions, but the
very next day deliberately breaks his promise. I do not give him the
house, because he did not keep his agreement; and can anyone say on that
account that I am unjust or unkind to him or his children? Certainly
not. Well, God acted in the same manner with Adam. He promised him
Heaven, a home more beautiful than any earthly palace--the place Our
Lord calls His father's house (John 14:2) and says there are many
mansions, that is, dwelling places, in it. God promised this home to
Adam on condition that he would observe one simple command. He had no
right to Heaven, but was to receive it, according to the promise, as a
free gift from God, and therefore God, who offered it conditionally, was
not obliged to give it when Adam violated his part of the agreement.

The example is not a perfect one, for there is this difference in the
cases between Adam and my friend: when my friend does not get the house,
he sustains a loss, it is true; but he might still be my friend as he
was before, and live in my house; but when Adam lost Heaven, he lost
God's friendship and grace, and the loss of all grace is to be in sin.
So that Adam by breaking the command was left in sin; and as all his
children sustain the same loss, they too are all left in sin till they
are baptized.