Show me in the Bible where it uses such language.
Maybe you have a different understanding of the word "Salvation".
To me, it means being saved from death, which means eternal separation from God, Romans 6:23.
When Adam was told that he would die if he ate the fruit from the tree, that was correct, and he did - spiritually. His relationship with God was changed; he hid from God and was ashamed of his nakedness. He was cursed by God and driven from the garden. From that day onwards, people had to offer sacrifices to approach God - Cain and Abel, Job, Noah. In the OT God spoke to people through the prophets. The relationship between man and God was broken because of sin.
Jesus offered his perfect life as a sacrifice to reconcile us to God, Romans 5:10-11, 2 Corinthians 5:18, Colossians 1:21-22.
He offered his life as a ransom for many, Mark 10:45.
His blood was shed for the forgiveness of sins, Matthew 26:28.
We have been justified by Christ's blood and his sacrifice, Romans 5:1, Romans 5:9, 1 Corinthians 6:11, Galatians 3:11, Galatians 3:24.
Jesus is the only Way to the Father, John 14:6, and the only name through which we are saved, Acts 4:12.
We have eternal life through Jesus, John 3:16, John 3:36, John 4:14, John 5:24, John 6:29, John 6:40, John 8:24, John 8:51, John 10:10, John 11:25, 1 John 5:12.
Baptism and celebrating the Lord's Supper do not reconcile man and God, Jesus does.
How do you know they won't be?
They will be saved only if they confess that Jesus, who was both man and God, died to save them.
I was not arguing against the sacraments, but was saying that mindlessly taking communion, or having been baptised as a child, is not enough to save. Otherwise, Jesus needn't have died. If saying sorry to God, wanting a new life and going underneath the water/having water sprinkled on you was enough to save, then people who denied God and lived as they wished without him, would be in heaven.
Yes, they may still be if they make a last minute confession/repentance; I don't know if that might happen. But being baptised, alone, is not the way to the Father. Baptism is not the name which saves us, only the name of Jesus.
If they believe in Jesus as Lord, why not? Do you think we are saved by correct theology?
In a sense, yes.
If we believe that Jesus was a good man, but not God - as JWs do - then it was a good, but still sinful, man who died on the cross. The book of Hebrews says that a regular high priest offered sacrifices for his own sins and the sins of the people, Hebrews 5:3, Hebrews 7:27.
Jesus was without sin so could offer his own life as a sacrifice, 1 Peter 1:19-20.
Can someone confess that Jesus is LORD and yet not believe what he said?
JWs say that Jesus was only A god, and do not accept the Trinity.
At best, they are a parachurch ministry.
In your opinion.
They are God's children, evangelists and have no doubt been responsible for many coming to faith.