We are Reformation Lightning
Only Scripture, because it is God’s inspired Word, is our inerrant, sufficient, and final authority for the church. This is because, as Paul says, “All Scripture is breathed-out by God” and “profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be complete, equipped for every good work" (2 Tim. 3:16–17).
The Father saved us by sending his Son to “become flesh” (John 1:14) to represent us, substituting himself on our behalf. Where we failed to keep the law, Christ obeyed the law for us; where we deserve the penalty for breaking the law, Christ died for us. Christ fulfilled the law we could not keep, and he bore the wrath of God that we deserve (Rom 3:21–26), and gives us God's approval that we don't deserve.
How does the believer receive the redemption Christ has accomplished? Through faith and faith alone. Rather than trusting in ourselves, we trust in Jesus Christ. Faith is the instrument through which we receive righteousness. Through faith in Christ that blessed status in Christ, which God alone can give, is given to us. Paul warns us that no one will be justified by works but only through faith in Christ (Gal. 2:15–3:14).
Our salvation is by grace and by grace alone. God’s election “depends not on human will or exertion, but on God, who has mercy” (Rom. 9:16). In fact, the grace that saves us is, as John Newton so famously sung, “amazing,” because it does not originate with us at all but stems from God’s mercy in eternity. His choice, in short, is not conditioned on us; that would give us reason to boast. Rather, his electing grace is unconditional.
God's glory alone
Only if our salvation is by grace alone will God alone receive all the glory.
If there is something of our own we can claim, then we no longer boast in Christ alone. But if he is the author and finisher of our salvation then he alone is to be magnified for his sovereign grace.
Praise be to God!
These were taken and simplified from The Gospel Coalition