Sure, here is a detailed and in-depth meaning and commentary of Romans 4:13-14 from the King James Version of the Bible:

"For the promise, that he should be the heir of the world, was not to Abraham, or to his seed, through the law, but through the righteousness of faith. For if they which are of the law be heirs, faith is made void, and the promise made of none effect"

The book of Romans was written by the apostle Paul to the Christians in Rome, and the passage of Romans 4:13-14 is part of a larger discussion about faith and the promise of God. In this particular passage, Paul is highlighting the key point that the promise of being heirs of the world, and thus inheritors of salvation, was not made to Abraham or his descendants through strict adherence to the law of Moses. Instead, the promise was made through Abraham’s faith in God. This distinction is crucial because it sets the foundation for understanding the relationship between faith and the law under the New Covenant of grace.

The promise that Paul is referring to here is the covenant that God made with Abraham in the Old Testament. This covenant, which is recorded in Genesis 12:1-3 and reiterated in Genesis 15:1-6, includes the promise of land, numerous descendants, and blessings for all nations through Abraham's seed. Paul highlights that this promise was not made because of Abraham's perfect obedience to the law, because the law had not yet been given at the time of God’s promise to Abraham. Instead, it was made because of Abraham's faith in God. This points to the fact that righteousness and salvation do not come through adherence to the law, but through faith in God and his promises.

Paul’s commentary on the relationship between faith and the law is significant within the context of the early Christian church. At that time, there were Jewish Christians who believed that strict adherence to the law of Moses was necessary for salvation. Paul’s letter to the Romans addresses this issue and shows that righteousness and salvation come through faith in Jesus Christ, not through the works of the law. This teaching was foundational for the early church and helped to establish the understanding that salvation is a gift from God received through faith, rather than earned through human effort.

In verse 14, Paul continues to emphasize the superiority of faith over the law by stating that if righteousness comes through the law, then faith is rendered meaningless and the promise of God becomes ineffective. This is in line with Paul’s larger argument that justification and salvation are not achieved through obeying the law, but through believing in the promises of God and having faith in Jesus Christ. Paul does not mean to say that the law was unimportant or irrelevant, but rather that its purpose was to point towards the need for a savior and ultimately lead people to faith in Christ.

Symbolically, this passage underscores the theme of faith as the means of receiving God’s promises. It serves as a reminder that God’s promises are not contingent on our own works or efforts, but on our trust and belief in him. This echoes the broader biblical theme of God’s grace and the concept that salvation is a gift from God rather than something we can earn. In addition, this passage also highlights the pivotal role of Abraham, who is often referred to as the father of faith, and how his example of faith in God became the foundation for the entire Christian faith.

In conclusion, Romans 4:13-14 from the King James Version of the Bible carries a profound and timeless message about the relationship between faith and the law. It emphasizes the importance of faith as the means of receiving God’s promises and underscores the foundational truth that salvation comes through faith in Jesus Christ, not through human effort or adherence to the law. This passage continues to be a source of spiritual encouragement and insight for Christians, pointing them toward the centrality of faith in their relationship with God.