Just exactly WHERE does the Bible say that “ just because God has things for us to do, doesn’t mean we are not saved until we do them.”? I have NEVER read a scripture that teaches that. I believe that is just your opinion. But there are many scriptures that teach OBEDIENCE is necessary to salvation. 2 Thess. 1 says those who do not OBEY the gospel of Jesus Christ will be lost. Christ has given us commands for salvation and He expects them to be obeyed. If you want to see how God feels about those who do not obey his commandments look at Nadab and Abihu in Leviticus 10. They were killed just for not using the correct “fire” to offer incense to God. God had told them exactly what to do and they, like you, didn’t think it was that important. Or read about the first King of Israel, Saul, who didn’t obey God’s instructions about killing the Amalakites in 1 Samuel 15. God took the throne away from Saul’s family.. or the story of Uzzah in 2 Samuel 6–He was killed for touching the ark-because God had told them not to touch it. Do you think those people thought it was ok not to do what God says? If you want to risk your soul’s salvation on the opinion that we are saved regardless of whether we obey God’s instructions or not, you go ahead. As for me, I’ll listen to 2 Peter 1:10 who tells us to make our “call and election sure..”
I don’t know why you would think Cornelius and his household went to hell, because they obeyed Christ in “water” baptism after being COMMANDED by the apostle Peter to be baptized in verses 46-48 of Acts 10.
As far as the thief on the cross goes, he was living under the old Jewish law of Moses which did not require baptism to be saved. Jesus’s “will” that taught Baptism for the remission of sins, was not in effect until Jesus death—just like anyone’s “will” today. And that message was preached for the first time 50 days AFTER Jesus and the thief s’ death in Jerusalem in Acts 2.
Jesus made “faith” and “baptism” EQUAL in importance by connecting them together with the conjunction “and” in Mark 16:16 - “He that believes AND is baptized shall be saved.” So, yes, baptism is just as important as faith according to the Messiah. And please notice that The Christ puts salvation AFTER baptism—NOT BEFORE baptism. So, if you can be saved without baptism, then I guess you can be saved without “faith”. According to Jesus they stand or fall together.
And please don’t insult our intelligence by saying that because Jesus only said those who don’t believe will be condemned and not those who are not baptized. God knew, as should you, that an unbeliever would NEVER be baptized in the name of Jesus— why would he if he is an unbeliever?? Did Jesus need to tell you, “” he that believes not and is not baptised shall be condemned? I’m glad God credited us with enough common sense to understand that he did not have to say that for us to know it would never happen.