The New Testament provides additional evidence that refutes the Satan-Gained theory.
For example, we read in Luke 9:1 that Jesus gave His twelve disciples “authority over all the demons.” Additionally, in Luke 10:19, Jesus told them, “Behold, I have given you authority to tread upon serpents and scorpions, and over all the power of the enemy, and nothing shall injure you” (emphasis added).
It Jesus gave them authority over all the power of Satan, He first must have had that authority Himself. Satan is under God’s authority.
Later in Luke’s gospel we read of Jesus saying to Peter, “Simon, Simon, behold, Satan has demanded permission to sift you like wheat” (Luke 22:31). The text indicates that Satan could not sift Peter without first obtaining permission from God. Again, Satan is under God’s control.
 See also 1 Corinthians 10:13, which indicates that God limits our temptation, which indicates that He limits the tempter.