Your problem is that you aren't able to hear [comprehend, understand] the scriptures, which are God's Words, because you are not [born] of God John 8:43, 47.
The free gift of Salvation was reckoned, in the Mind of God, upon those whom He had Chosen In Union with Christ before the foundation to have forgiveness of sins Eph. 1:4-7. So it has nothing to do with an imposition, or an offering to them to accept or reject, but was Given to His Election of Grace [Christ's Seed Is. 53:10] in their Surety and Saviour Heb. 7:22; Is. 53:6 before the World began 2 Tim. 1:9 based on the Blood of the Everlasting Covenant of Grace Rev. 13:8; Heb. 13:20.
John 17:1-2
1 These words spake Jesus, and lifted up his eyes to heaven, and said, Father, the hour is come; glorify thy Son, that thy Son also may glorify thee: 2 As thou hast given him power over all flesh, that he should give eternal life to as many as thou hast given him.
These are the same "many" [Election of Grace] that the Gift of Eternal Life has abounded unto:
Rom. 5:15
But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many.