In context, that cannot be the case, because just a few verses earlier, John had written:
(Joh 1:10 -11 NKJV) He was in the world, and the world was made through Him,
and the world did not know Him.
(Joh 1:11) He came to His own,
and His own did not receive Him.
As John Gill commented on John 1:16:
"but his fulness of grace and truth is dispensatory, and is in him, on purpose to be communicated unto others: and "of it", the evangelist says, "have all we received"; not all mankind, though they all receive natural light and life from him; nor merely all the prophets of the Old Testament, though they had their gifts and grace from him, who then was, as now, the head of the church; nor only all the apostles of Christ, though these may be principally intended; but all believers, who, though they have not all the same measure of grace, nor the same gifts, yet all have received something: nor is there any reason for discouragement, envy, or reproach."
Jesus did not come to make salvation ("grace and union" to use your phrase) possible, but to save. The angel said to Joseph:
(Mat 1:21 NKJV) And she will bring forth a Son, and you shall call His name JESUS,
for He will save His people from their sins."
(not: "He will make His people's salvation a possibility.")
Similarly, Paul wrote to Timothy:
(1Ti 1:15 NKJV) This is a faithful saying and worthy of all acceptance, that
Christ Jesus came into the world to save sinners, of whom I am chief.
(not: "Christ Jesus came into the world to to make the salvation of sinners a possibility.")
I wonder what meaning you use for "redemption." The entry for "Redemption" in McClintock and Strong's Biblical Cyclopedia begins:
"Redemption, in theology, denotes our recovery from sin and death by the obedience and sacrifice of Christ, who on this account is called the "Redeemer" (
Isa 59:20;
Job 19:25). "Being justified freely by his grace, through the redemption that is in Christ Jesus" (
Ro 3:24). "' Christ hath redeemed us from the curse of the law, being made a curse for us" (
Ga 3:13). "In whom we have redemption through his blood, the forgiveness of sins, according to the riches of his grace" (
Eph 1:7). "Forasmuch as ye know that ye were not redeemed with corruptible things, as silver and gold, from your vain conversation received by tradition from your fathers; but with.the precious blood of Christ, as of a lamb without blemish and without spot" (
1Pe 1:18-19). "And ye are not your own, for ye are bought with a price" (
1Co 6:19-20)."
When we see the word "redemption" in the New Testament, it always refers to Christians, people who have been saved. For example, Paul wrote to the Christians at Corinth:
(1Co 1:30 NKJV) But of Him you are in Christ Jesus, who became for us wisdom from God—and righteousness and sanctification and
redemption—
It is never (as far as I know) used generally of all mankind.