Where in God's Word is metmom's salvation specifically promised? I don't mean a general promise, show me where you are called out by name.
Catholics can have a moral certitude of their own salvation. It's not an infallible one, because it's not promised in the Deposit of Faith. You can't be sola scriptura and then insist that you are infallibly saved. That's putting faith in something not explicitly written in Scripture.
Besides, the *sin* of presumption is not mentioned anywhere in Scripture.
The sin of presumption is the sin of believing that God is obligated to be merciful to you even though you keep sinning gravely and are not sorry for your sins. Do you believe that? If you do, I suggest you read 2 Peter 2, with special attention to verses 20-22. That text is describing nothing if it isn't describing the sin of presumption.
John 3:14-18 And as Moses lifted up the serpent in the wilderness, so must the Son of Man be lifted up, that whoever believes in him may have eternal life. For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.
John 5:24 Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life. He does not come into judgment, but has passed from death to life.
If my name were specifically in Scripture, then I still couldn't be sure He meant me because there are others with my name as well.
*Whoever* and *whosoever* covers it all and does not need to name names.
I'd rather be called presumptuous by men who are jealous of my security in Christ than call God a liar by disbelieving the promises He made in His word.
Besides, Catholicism cannot even guarantee a place in heaven, so why should any one even bother? What would be the point of all that work and sacrifice all life long just to find out AFTER you died that you missed the mark anyways?
If you as a Catholic are not sure you are going to heaven, then why are you a Catholic?
Also, it is NOT presumption to be confident of our standing in Christ. God wants us to know.
I John 5:10-15 Whoever believes in the Son of God accepts this testimony. Whoever does not believe God has made him out to be a liar, because they have not believed the testimony God has given about his Son. And this is the testimony: God has given us eternal life, and this life is in his Son. Whoever has the Son has life; whoever does not have the Son of God does not have life. I write these things to you who believe in the name of the Son of God so that you may know that you have eternal life.
And this is the confidence that we have toward him, that if we ask anything according to his will he hears us. And if we know that he hears us in whatever we ask, we know that we have the requests that we have asked of him.
Well, yes you can...based on Scripture.
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11For the Scripture says, WHOEVER BELIEVES IN HIM WILL NOT BE DISAPPOINTED.
12For there is no distinction between Jew and Greek; for the same Lord is Lord of all, abounding in riches for all who call on Him;
13for WHOEVER WILL CALL ON THE NAME OF THE LORD WILL BE SAVED.
Romans 10:11-13 NASB
What a ridiculous argument.
It is also one devoid of the promises in Scripture on this matter.