Romans 6:14 (cf. Rom 5:17,20-21, 2 Cor 1:12, 2 Timothy 1:9)
We are saved by grace, and grace alone:
Ephesians 2:8-10 (cf. Acts 15:11, Rom 3:24, 11:5, Eph 2:5, Titus 2:11, 3:7, 1 Pet 1:10)
Thus, the biblical argument outlined above proceeds as follows:
1. Grace saves us.
2. Grace gives us the power to be holy and righteous and without sin.
Therefore, for a person to be full of grace is both to be saved and to be completely, exceptionally holy. It’s a “zero-sum game”: the more grace one has, the less sin. One might look at grace as water, and sin as the air in an empty glass (us). When you pour in the water (grace), the sin (air) is displaced. A full glass of water, therefore, contains no air (see also, similar zero-sum game concepts in 1 John 1:7, 9; 3:6, 9; 5:18). To be full of grace is to be devoid of sin. Thus we might re-apply the above two propositions:
1. To be full of the grace that saves is surely to be saved.
2. To be full of the grace that gives us the power to be holy, righteous, and without sin is to be fully without sin, by that same grace.
A deductive, biblical argument for the Immaculate Conception, with premises derived directly from Scripture, might look like this:
1. The Bible teaches that we are saved by God’s grace.
2. To be “full of” God’s grace, then, is to be saved.
3. Therefore, Mary is saved (Luke 1:28).
4. The Bible teaches that we need God’s grace to live a holy life, free from sin.
5. To be “full of” God’s grace is thus to be so holy that one is sinless.
6. Therefore, Mary is holy and sinless.
7. The essence of the Immaculate Conception is sinlessness.
8. Therefore, the Immaculate Conception, in its essence, can be directly deduced from Scripture.
The only way out of the logic would be to deny one of the two premises, and
1) hold either that grace does not save or
2) that grace is not that power which enables one to be sinless and holy.
It is highly unlikely that any Evangelical Protestant would take such a position, so the argument is a very strong one,
because it proceeds upon their own premises.
Luke 1:28 The Immaculate Conception