God is merciful. But I have noticed that we tend to believe in God’s mercy in ways that overcome his justice or simply render his scriptures false. If that was the case, certainly he would have said so.
The mercy of God does nothing to change the fact that if I would have been more righteous, I would have had better spiritual blessings, whereas if I had been less righteous, I would have had fewer.
And that is true for everyone.
The mercy of God does nothing to change the scriptural teaching
D&C 130:20 There is a law, irrevocably decreed in heaven before the foundations of this world, upon which all blessings are predicated—
21 And when we obtain any blessing from God, it is by obedience to that law upon which it is predicated.
God is full of mercy, but his mercy is not applied in ways that rob justice. Rather, the mercy of God is manifest in two ways: Firstly, it allows us to gain forgiveness on condition of repentance.The mercy of God is manifest in forgiveness so completely when we completely repent, that Alma the younger could become a great prophet despite the serious sins of this youth. This is critical to us. But we must not gloss over the that requirement of full repentance for full forgiveness.
The mercy of God does not grant us blessings we are unworthy of. It does nothing to alter the text and meaning of D&C 130:20-21 quoted above, for that would be to allow mercy to rob justice.
But this brings us to the second way God’s mercy truly is manifest. God’s mercy is also manifest in the abundant overly-generous blessings we can gain through our obedience. Thus the scripture cited above is actually both a statement of God’s perfect justice, as well as a means by which we enjoy his mercy. The spiritual blessings he will grant, which he always grants for obedience to that law on which the blessing is predicated, are far too generous for what we have truly merited. We are somewhat spoiled in this regard, and don’t recognize how merciful and generous God truly is to us with his blessings. We do some little thing and enjoy the blessings of heaven, and we don’t wonder at how much greater the blessing was worth to us than the effort we expended to obtain it.