Unsurprising you need to be told
John 3
36Whoever
believes in the Son has eternal life; whoever
disobeys the Son shall not see life, but the wrath of God remains on him.
In regards to "does not obey the Son" in John 3:36 in the New American Standard translation of the Bible, this does not mean that receiving eternal life is received based on the merits of our obedience/works which follows believing in the Son, but
obey by choosing to believe in the Son. If John wanted to make obedience the central theme in salvation here, he would have said: "He who believes
and obeys the Son has eternal life," but that is not what John said.
To obey the Son here is to choose to believe in the Son.
The King James Version renders this same verse as: He that believeth on the Son hath everlasting life: and he that
"believeth not the Son" shall not see life; but the wrath of God abideth on him. The NIV says
"rejects the Son" and the CSB says,
"refuses to believe in the Son." The Greek word translated as "believeth not" in that verse is "apeitheo" and it means: "not believe, disobedient, obey not, unbelieving." Strong’s definition of apeitheo is "
to disbelieve willfully and perversely." In the context of 3:36, to "not obey the Son" means to
reject the Son by refusing to believe in the Son.
Romans 1
5through whom we have received grace and apostleship to bring about the
obedience of faith...
In regards to Romans 1:5, although Paul can speak of people’s initial response of choosing to believe the gospel as an act of obedience, in which he describes it as "obeying the gospel" (Romans 10:16; 1:16), the purpose of Paul’s apostleship was not merely to bring people to conversion but also to bring about transformed lives that were obedient to God. Notice that Paul said they
HAVE (already) received grace and apostleship FOR/UNTO obedience to the faith. Just as in Ephesians 2:10, Paul said that we are created in Christ Jesus
FOR/UNTO good works. We are clearly saved FOR good works, NOT BY good works (Ephesians 2:8-10). Paul did not say that they did not receive grace and apostleship until they produced obedience afterwards. We have access by faith into grace.. Romans 5:2 not faith "and obedience/works." We are saved through faith in Christ first, then "unto" obedience/works.
Galatians 5
7You were running well. Who hindered you from
obeying the truth?
8This
persuasion is not from him who calls you.
Getting sidetracked by legalistic teachers results in not obeying the truth. Although choosing to believe in the Son is an act of obedience and multiple acts of obedience/works follow saving faith in Christ and are produced out of faith, belief/faith is
not defined "as" multiple acts of obedience/works.