There is no denying that salvation is of the Lord. He is the author of our salvation. He is the finisher of our salvation. It is He who gets all the credit for saving us. Our decision to approach God in humble repentance does not merit us anything. God is not under any obligation whatsoever to save us. He is compassionate. He is merciful. Our decision to repent is distinguished from His decision to save us. These two ideas cannot be equated. None of His plans are thwarted because He has given us the ability to either accept or reject Him. That is how He ordained things to be. Faith is the antithesis of works (Romans 4:4-5; 11:6). Atonement is applied freely to all who come to Christ by faith. It is God who regenerates us. The gospel itself has sufficient power to draw any sinner to God (Romans 1:16; 1 Corinthians 1:21; Hebrews 4:12).His grace is an absolute necessity. The gospel is God's gracious offer of salvation to undeserving sinners. Faith is not meritorious, but the antithesis of works (Ephesians 2:8-9). Christ's substitutionary atonement is not simply an example to follow, but was actually done as atonement for our sins.
The Bible is crystal clear that we must execute a decision to humble ourselves when seeking the forgiveness of God (2 Kings 22:19; James 4:10; 1 Peter 5:5-6). This is an emphatic teaching of Scripture. God in His sovereignty chose to design us with the ability to accept or reject Him. Moreover, the Calvinist systematic is loaded with problems of its own. It makes everything a meticulously designed puppet show. It gives the lost a perfect excuse on Judgement Day. It makes the devil irrelevant, as it was God who decreed that he caused the fall. Jesus Christ plainly identified those who continually reject and oppose His message as being among those that He came to save (John 12:47-48), which violates any notion of limited atonement.