The resounding message of the New Testament witness is that "Jesus is Lord". A Lord is one that has dominion over his domain.
"And having spoiled principalities and powers, he made a show of them openly, triumphing over them in it" Colossians 2:15.
Many will say if Jesus has defeated sin, death and the devil, then why is there so much evil in the world? This is the age of sin and death, it is also the age of grace and faith. Everything is being played out to the end. When Jesus returns it will be the end of the age of sin and death. It will also be the end of the age of grace and faith. There will not be a chance for salvation after Jesus returns, there will only be judgment.
When Jesus entered into heaven, having defeated sin, death and the devil, God made Jesus both Lord and Christ, Acts 2:36.
"Who being the brightness of his glory and the express image of his person and upholding ALL THINGS by the word of his power, when he had by himself purged our sins, sat down on the right hand of the Majesty on high" Hebrews 1:3.
God sees ALL THINGS in his Son Jesus Christ. As far as God is concerned, Jesus has defeated sin, death and the devil and is the, "King of Kings and the Lord of Lords" Revelation 19:16. It doesn't matter how you see things, nor does it matter what you think. All that matters is how God thinks and sees all things, and God sees ALL THINGS in Jesus Christ. Jesus is God's new Adam and our new humanity. In Jesus Christ we have been justified, Romans 3:26, sanctified and redeemed, 1 Corinthians 1:30.
Calvinism is a denial of the Lordship of Jesus Christ. To say that Jesus did not atone for the sins of the whole world, 1 John 2:2, is to say that Jesus is not Lord. To say that Jesus is not Lord is blasphemy against the Holy Spirit and is the unforgivable sin. No one will be saved that does not believe that Jesus is Lord. To say that Jesus only atoned for some sins, but not all sins is to say that Jesus is not Lord and is not of the Holy Spirit. The foundation of the Gospel is the Lordship of Jesus Christ and the fact that he has defeated sin, death and the devil and is the savior of the whole world, John 12:47.
If Jesus has victoriously defeated sin, death and the devil and is Lord, then that means that all religions are worthless. This is why Paul said, "And you are complete in him, which is the head of all principality and power" Colossians 2:10. This is how Jesus has reconciled us and the world unto God, 2 Corinthians 5:18, 19. Jesus perfects our humanity in himself and presents it to God as perfect and complete in himself. This means that salvation can only be by grace through faith. Everything else is a denial of the Lordship of Christ and his Gospel.